One of the most appealing new features of the Apple Watch Series 4 is its electrocardiogram (ECG) sensor that measures the electrical activity of your heartbeat, providing you with a heart rhythm classification that can be shared with your doctor. While the feature will be available later this year in the United States, 9to5Mac reports that it could take years for it to be approved in the United Kingdom. From a report: The Medicines and Healthcare products Regulatory Agency (MHRA) explains that the process starts by examining Apple's documentation surrounding the ECG feature and performing an audit of the quality assurance system. While this step doesn't appear to be lengthy, the proceeding steps could make the process longer. MHRA says it would require Apple to perform a new clinical investigation to judge the effectiveness of the ECG on Apple Watch, but Apple would likely not be able to use any of the data from the studies it's already completed because MHRA requires companies to notify the regulator in advance of a study.

Once the study is submitted, MHRA has 60 days to approve it (which may become longer if the regulators have further inquiries for Apple), and then Apple can begin the study. These last few steps are what the MHRA say "could potentially add years" onto the debut of the ECG in the UK. Despite the potential for years-long approval, Apple may find ways to expedite this process. While the United Kingdom remains part of the European Union, it's possible that Apple could receive approval from a broader regulatory body and sidestep the MHRA's processes.

Slack has acquired email app company Astro to incorporate it into Slack channels. As a result, Astro is shutting down its Mac, iOS, Android, Alexa and Slack apps. They're no longer taking new users and existing ones will lose access on October 10th. Engadget reports: The company said that with over 50 million channels created to date, they're increasingly becoming the platform through which teams collaborate. "But we all know that email is still a very important tool in business communication," said Slack. "We've taken some steps to make it possible to integrate email into Slack, but now we're in a position to make that interoperability much simpler and much, much more powerful."

Last year, Astro launched its Astrobot Slack app, which let users manage their emails and check their Office 365 or Google calendars from within Slack. It also allowed them to do one search to pull up results from both Slack and email. "As we explored with Slack how to bring together messaging, email and calendar, it became evident that we would have the biggest impact on workplace communications and realize our original vision by joining Slack," the company said.

Soon after The Verge reported that Instagram was working on a reshare feature, the company said that the function is "not happening." It told The Verge and TechCrunch that it's neither building nor testing a regram feature. Engadget reports: The Verge reported on Thursday that Instagram appeared to be working on a way for users to easily share others' posts in their own feed. The feature would be housed in the menu situated in the upper right-hand corner of each post and would give users the option to "share to feed." A source familiar with the feature provided The Verge with screenshots of posts shared with the feature, which the site noted looked like was in very early stages of development.

Apple has unveiled its next-generation Apple Watch Series 4 smartwatch, featuring a larger display with smaller bezels, a 64-bit processor that's twice as fast as the previous generation, and electrocardiography (ECG) support. 9to5Mac reports: In terms of hardware, the Digital Crown has been completely reengineered with haptic feedback. For instance, as you flip through content in the Podcast application. The speaker is also over 50 percent louder, according to [Apple COO Jeff Williams]. As we reported earlier this week, the Apple Watch Series 4 uses a new 64-bit processor that offers performance up to two times faster performance. There's also a next-generation accelerometer gyroscope, which Williams says allows Apple Watch to detect a fall. When a fall is detected, Apple Watch will send an alert prompting you to call emergency services. If it senses you are immobile for more than 1 minute, the call will be started automatically.

As for heart features, Apple Watch is now capable of detecting a low rate. The device will also now screen your heart rhythm, allowing it to detect atrial fibrillation. As expected, Apple Watch Series 4 also now supports ECG -- which measures the electrical activity of the heart. With Apple Watch, you can take an ECG directly on the Apple Watch by putting your finger directly on the digital crown. The feature -- as well as irregular heart rate detection -- has received FDA clearance. Williams says that all health and fitness is encrypted on-device and in the cloud. Battery life on Apple Watch Series 4 is the same, 18-hours as before. Outdoor workout time is now 6 hours. In terms of pricing and colors, the Apple Watch Series 4 will start at $399 for the GPS model and $499 for the cellular model, with preorders starting September 14th. The aluminum model will feature space gray, silver, and black color configurations, while the stainless steel model will feature gold, polished black, and space black color configurations.

Uber is introducing a new safety feature called "Ride Check" that will use GPS, accelerometer, gyroscope, and other sensors inside a smartphone to detect whether there has been a vehicle crash. The Verge reports: In the event of a crash, the Uber app will automatically send a notification to a rider's phone to answer a series of questions. If they verify that there has been an accident, the rider will be prompted to call 911. Uber's team of safety operators may also reach out to ensure the rider is safe when the feature is triggered. The feature doesn't require any new permissions because it is linked to the driver's smartphone, rather than the riders. Drivers have the Uber app on more frequently than riders, who typically keep the app on in the background during trips.

Ride Check isn't just for crashes, though. The feature is also triggered if the vehicle stops for a prolonged or unusual period of time. Riders will receive a notification asking them if everything is alright, and based on their response, the app will present a series of options, including a call to 911. The ride-hail company also released a number of other features, including voice commands and an insurance hub for Uber drivers, new ways to mask addresses and phone numbers between riders and drivers, and two-factor authentication to protect a rider's account from malicious hacking.

An anonymous reader quotes a report from Ars Technica: Hackers have uncovered and tested a screen-splitting "VR Mode" that has been buried in the Switch's system-level firmware for over a year. The discovery suggests that Nintendo at least toyed with the idea that the tablet system could serve as a stereoscopic display for a virtual reality headset. Switch hackers first discovered and documented references to a "VrMode" in the Switch OS' Applet Manager services back in December when analyzing the June 2017 release of version 3.0.0 of the system's firmware. But the community doesn't seem to have done much testing of the internal functions "IsVrModeEnabled" and "SetVrModeEnabled" at the time. That changed shortly after Switch modder OatmealDome publicly noted one of the VR functions earlier this month, rhetorically asking, "has anyone actually tried calling it?" Fellow hacker random0666 responded with a short Twitter video (and an even shorter followup) showing the results of an extremely simple homebrew testing app that activates the system's VrMode functions.

As you can see in those video links, using those functions to enable the Switch's VR mode splits the screen vertically into two identical half-sized images, in much the way other VR displays split an LCD screen to create a stereoscopic 3D effect. System-level UI elements appear on both sides of the screen when the mode is enabled, and the French text shown in the test can be roughly translated to "Please move the console away from your face and click the close button." The location of the functions in the Switch firmware suggest they're part of Nintendo's own Switch code and not generic functions included in other Nvidia Tegra-based hardware.

Next month, Apple is expected to unveil three new iPhones, each with differing specs/features. According to analyst firm Trendforce, the large 6.5-inch "flagship" model will support up to 512GB of onboard flash storage. Apple Pencil support will also be "offered as an option," although the company didn't specify which models will support the stylus. Apple Insider reports: The company expects that the the 6.1-inch LCD version will come with Face ID, Dual-SIM technology. The firm expects it to retail for between $699 and $749. The 5.8-inch OLED iPhone will be priced at $899 to $949. The 6.5-inch device will come in storage capacities up to 512GB, with one variant of the size potentially having dual-SIM support and expected to be "limited within $1,000 threshold as to encourage purchasing from consumers," according to Trendforce. Both the 5.8- and 6.5-inch OLED models are expected to have 4GB of RAM. The 6.1-inch LED devices will have 3GB of RAM, the same as the iPhone X. The analyst firm believes that all three models are expected to ship in September and October.

fstack writes: Linus Torvalds has released Linux 4.18 as the newest kernel bringing a Steam Controller kernel driver, Spectre updates for ARM64, power management updates, a "Restartable Services" system call, AMD Radeon graphics driver improvements, V3D DRM as Broadcom's new graphics driver, DM writecache support, USB 3.2 support, and many other updates. Linus Torvalds wrote of the 4.18 final release: "It was a very calm week, and arguably I could just have released on schedule last week, but we did have some minor updates. Mostly networking, but some vfs race fixes (mentioned in the rc8 announcement as 'pending') and a couple of driver fixes (scsi, networking, i2c). Some other minor random things (arm crypto fix, parisc memory ordering fix)." In a separate article, Phoronix details all the changes and new features available in this release.

Today, Samsung unveiled the successor to the Galaxy Tab S3 from last year. The aptly named Galaxy Tab S4 features a 10.5-inch Super AMOLED display with a 2560 x 1600 resolution, Qualcomm Snapdragon 835 processor with 4GB RAM, 64GB internal storage (expandable via microSD card) and 13-megapixel f1.9 rear-facing camera. Unlike the Tab S3, it includes Samsung Dex software that lets users connect a Samsung mobile device to a monitor and then use the device as a pseudo-desktop. Ars Technica reports: The first Dex dock came out over a year ago and was designed to be used with Samsung smartphones. Users could plug their device into the dock, connect it to a monitor, pair a keyboard and a mouse, and use the setup as they would a full desktop PC. The system ran a version of Android that Samsung modified to better suit a desktop UI, which included a lock screen and a task bar area with app icons. Dex on the Galaxy Tab S4 works just like this, with a couple of extra features that leverage the power of a tablet. When connected to a monitor, both the big screen and the tablet's screen can be used simultaneously. In a short demo, Samsung showed how the device supports up to 20 open windows at once and how features like split screen and drag-and-drop can be used just as they would on a desktop PC. Users can launch Dex when not connected to a monitor as well, and that produces the same modified Android UI on the tablet's 10.5-inch, 2560 x 1600 Super AMOLED display. When connected to a monitor, both the big screen and the tablet's screen can be used simultaneously. In a short demo, Samsung showed how the device supports up to 20 open windows at once and how features like split screen and drag-and-drop can be used just as they would on a desktop PC. Users can launch Dex when not connected to a monitor as well, and that produces the same modified Android UI on the tablet's 10.5-inch, 2560x1600 Super AMOLED display. The tablet carries a $649 price, but includes all the specs mentioned above, as well as support for signature Samsung features like Air Command, translate, and off-screen memos, and a redesigned S Pen.

An anonymous reader writes: "The Mozilla Foundation, the organization behind the Firefox browser, is working on adding a new feature to its browser that is similar to the Site Isolation feature that Google rolled out to Chrome users this year," reports Bleeping Computer. "[Chrome's] Site Isolation works by opening a new browser process for any domain/site the user loads in a tab." The feature has been recently rolled out to 99% of the Chrome userbase. "But Chrome won't be the only browser with Site Isolation," adds Bleeping Computer. "Work on a similar feature also began at Mozilla headquarters back in April, in a plan dubbed Project Fission." Mozilla engineers say that before rolling out Project Fission (Site Isolation), they need to optimize Firefox's memory usage first. Work has now started on shaving off 7MB of RAM from each Firefox content process in order to bring down per-process RAM usage to around 10MB, a limit Mozilla deems sustainable for rolling out Site Isolation.

Facebook is reportedly rolling out its "downvote" button to a wider group of users in the United States. "The feature began appearing on the service's mobile app without a formal company announcement -- and we only found out about it by browsing on our phones," reports Ars Technica. From the report: The feature appears to currently be limited to "public" posts. Should your account be flagged for this week's test, every comment in a thread will include a numeric value and small up- and down-arrows connected to that number. Upon the first display of this Reddit-like change, the Facebook app will offer guidance: "Support comments that are thoughtful, and demote ones that are uncivil or irrelevant."

This is in addition to the site's long-running "emotion" interface, which lets users tap "like" or emoji-styled buttons. These icons and numbers still attach to posts as they've done for years. Now an additional value based on up- and down-votes, appears as well, and these values are separate. Meaning, if you tap the "like" button and down-vote on the same comment, those actions don't cancel each other out. As of press time, these up- and down-vote numbers are not visible if your account is not flagged for the test. We have not yet seen this feature go live on any versions of the Facebook Android app.

Mozilla's latest Nightly builds for Firefox now include an option to mute autoplaying audio. The feature was recently added to the Chrome browser, but Mozilla's update offers a few more options. According to Engadget, "You can turn the feature off entirely, force it to ask for permission, and make exceptions for specific sites." Keep in mind that these are nightly releases, so you will most likely run into some bugs. The "polished version" is likely weeks away.

An anonymous reader quotes a report from Appuals: ReactOS, the "free Windows clone" operating system, has pushed out ReactOS 0.4.9 just recently, which brings a whole slew of improvements. With this latest 0.4.9 version, ReactOS has become entirely self-hosting without any issues, which means ReactOS can fully build itself from within itself, it does not require any third-party operating system to compile ReactOS. Self-hosting was built into older ReactOS versions, but it came with a myriad of issues -- the system would become too stressed under memory usage and storage I/O loads. This was due to a flawed NT-compliant kernel.

Additional improvements in ReactOS 0.4.9 include overall stability and performance enhancements. The hardware abstraction layer and the FastFAT drivers received significant attention, and FastFAT should no longer eat through the cache so fast it causes system crashes due to resource leakage. FastFAT has also been rewritten to trigger a "chkdsk" repair on dirty / corrupt volumes during boot detections. Some other quality improvements are the addition of a built-in zipfldr extension -- ReactOS can now natively unpackage zipped archives, without the need of a third-party tool like WinZip. The changelog can be viewed here.

An anonymous reader quotes a report from Ars Technica: Over the last few years, Microsoft has been working to improve the Windows console. Console windows now maximize properly, for example. In the olden days, hitting maximize would make the window taller but not wider. Today, the action will fill the whole screen, just like any other window. Especially motivated by the Windows subsystem for Linux, the console in Windows 10 supports 16 million colors and VT escape sequences, enabling much richer console output than has traditionally been possible on Windows.

Microsoft is working to build a better console for Windows, one that we hope will open the door to the same flexibility and capabilities that Unix users have enjoyed for more than 40 years. The APIs seem to be in the latest Windows 10 Insider builds, though documentation is a little scarce for now. The command-line team is publishing a series of blog posts describing the history of the Windows command-line, and how the operating system's console works. The big reveal of the new API is coming soon, and with this, Windows should finally be able to have reliable, effective tabbed consoles, with emoji support, rich Unicode, and all the other things that the Windows console doesn't do... yet.

Facebook is trying to get Instagram users to visit its site more often by further entwining the two services. According to Instagram user Spencer Chen, the Instagram app prompted him to check out a friend's new photo on Facebook. "Chen grabbed a screenshot and posted the notification on the internet, calling it a cry for attention by the older social network," reports Bloomberg. From the report: Instagram says what Chen experienced was a product test with a small contingent of users. Still, Instagram feeds Facebook in other ways. Last year, Facebook launched its own version of an Instagram tool called Stories, which lets people post videos that disappear within 24 hours. (The feature was initially copied from Snap Inc., a competitor.) Greenfield noticed the Facebook version became more popular once it became possible for Instagram users to post their stories in both places with the click of a button. Instagram Stories' 400 million users present a significant opportunity for Facebook's advertising business, according to Ken Sena, an analyst at Wells Fargo Securities. Instagram is on track to provide Facebook with $20 billion in revenue by 2020, about a quarter of Facebook's total, he wrote to investors. And cross-posting could help Facebook's video ambitions.

Uber is planning to partner with the bike-sharing company Lime to start renting scooters through its app. The announcement was made in Lime's new $335 million funding round. CNET reports: Uber didn't disclose how much it's investing in Lime, but Lime said it's "sizable." With Uber and Lime as strategic partners, the scooters will be co-branded and available in the Uber app. Uber launched a similar partnership with Jump bicycles in January and eventually acquired the dockless bike rental in April.

Scooters have become a controversial topic as they take over more and more cities across the U.S. As regulators hurry to write laws around the new form of transportation, lots of people say they love being able to scoot block-to-block around congested cities. Other residents complain that riders don't follow the laws of the road and endanger pedestrians by riding on sidewalks and leaving the scooters wherever they feel like it -- blocking parking spots, bike racks and wheelchair accesses. Here's what Uber's head of new modalities, Rachel Holt, had to say about the partnership: "Our investment and partnership in Lime is another step towards our vision of becoming a one stop shop for all your transportation needs. Lime already has an expansive footprint, and we're excited to incorporate their scooters into the Uber app so consumers have another fast, affordable option to get around their city, especially to and from public transit."

dryriver writes: If you are a user of a popular professional desktop software program, it is not uncommon for that program to get anywhere from 5 to 20 major or minor new features and functions about once a year to stay desirable and competitive. But it seems that hugely popular internet-based sites and services like Instagram, Facebook, YouTube, Google Search, Gmail, Outlook, WhatsApp, Telegram and others get major new features/changes much, much slower than desktop software. Quite often you'll come across a barrage of breathless news articles that say "Popular Internet Service X will add Y feature starting from April 1st." It is often one single and very obvious feature or functionality being added that people have wanted for years, not a cluster of 5 or 10 funky new functions at the same time.

Why is this the case? How is it that desktop software with just a few hundred thousand users and no more than a few dozen coders working can add 5 to 20 major new functions in just one year, and do this year after year, but a major internet-based service with tens or hundreds of millions of users and presumably hundreds or thousands of techies working behind the curtain keeps everyone waiting three years or longer to build a much requested feature into the system, and then only rolls out that one desired feature to great fanfare as if it is a huge achievement? Is it really that much harder to code major new features into an internet/cloud service, versus coding major new features into desktop software; or is this a deliberate business model that has become popular?

The much-anticipated Sets feature has been pulled from the newest Windows 10 Redstone 5 build and there's no word when it will return. As groovyPost reports, "The Sets feature is a tabbed-windows experience that lets you group together different apps on your desktop." It's like having different tabs open in your browser, but for apps and File Explorer. From the report: Details on why it was removed and when it will come back have been vague. Microsoft made the announcement about Sets in [yesterday's] blog post about preview build 17704: "Thank you for your continued support of testing Sets. We continue to receive valuable feedback from you as we develop this feature helping to ensure we deliver the best possible experience once it's ready for release. Starting with this build, we're taking Sets offline to continue making it great. Based on your feedback, some of the things we're focusing on include improvements to the visual design and continuing to better integrate Office and Microsoft Edge into Sets to enhance workflow. If you have been testing Sets, you will no longer see it as of today's build, however, Sets will return in a future WIP flight. Thanks again for your feedback."

Facebook announced today in a blog post that group administrators can start charging $4.99 to $29.99 a month for exclusive membership in certain groups. "Parenting, cooking, and home cleaning groups will be the first ones to get the new feature as part of an early test," reports The Verge. From the report: As it stands now, free groups will remain intact, but they will soon have the option to launch premium sub-groups. For instance, lifestyle blogger Sarah Mueller's Declutter My Home group is starting an Organize My Home group that costs $14.99 a month to join. And the Grown and Flown Parents group is making a College Admissions group that charges $29.99 for access to college counselors. Facebook says the new feature is so that group admins, who put a lot of time and dedication to growing their communities, can also earn money at the same time. The company also says admins could take the money they earn to create higher-quality content for the group as well, whether that be more posts, videos, or offline meet-ups and events. Facebook reportedly won't be getting a cut of the subscription fees.

An anonymous reader quotes a report from Quartz: The ride-hailing company has started testing a feature that gives riders the option to trade a shorter wait for a cheaper fare. "Prices are lower at 17:00," Uber recently advised an Uber employee who requested a ride in Berkeley, California, and tweeted a screenshot of the feature. The image showed the Uber employee that he could request a ride "now" (4:56pm local time) for $10.18, or wait until 5pm and pay $8.15, about 25% less. "If you're OK leaving later, we'll request your ride at 17:00 for a lower price," Uber's app stated.

The option to wait longer in exchange for a cheaper ride is being tested among all Uber employees in San Francisco and Los Angeles, a company spokeswoman told Quartz in an email. "Affordability is a top reason riders choose shared rides, and we're internally experimenting with a way to save money in exchange for a later pickup," she said.