If you’ve been holding on to a Pixel 4 for the past three years, you’ll have to get used to going without OS upgrades. Android Policenotes that, as planned, Google has released its last guaranteed software update for the Pixel 4 and 4 XL. They just include the usual round of minor bug fixes and security patches, but you can’t count on anything beyond this. While Google is known to provide one last update as a sendoff, it’s not clear when (or if) that’s coming.

Some Pixel 4 family members are still covered. The Pixel 4a is slated to receive regular version and security updates until August 2023, while the 4a 5G is safe until November that year. And you can rest easier if you’re a Pixel 6 owner. That device line is Google’s first to get five promised years of security updates, so it shouldn’t lose out before fall 2026.

Your Pixel 4 won’t immediately become obsolete, of course. Updates to Google Play Services and apps should keep the Android flagship useful for a while yet, and Google may rush out emergency patches for significant security flaws. Even so, you’ll want to consider a new phone if you insist on a consistent update stream. Google may not have timed this week’s Pixel 7 launch to catch device upgraders, but the debut is certainly convenient.

After years of users begging Twitter for an edit button, they’re finally getting their wish. The company is rolling out the long-awaited feature in Canada, Australia and New Zealand, but only for Twitter Blue subscribers. The option isn’t available in the US just yet, but Twitter says users there will get access soon. It plans to offer the feature in other markets too.

Twitter Blue subscribers who send a tweet and realize they made a typo or two will have 30 minutes to make edits. They can make changes up to five times during that time frame. For the sake of transparency, edited tweets have a modified timestamp that reads “last edited” and the time of the last change. Click the timestamp and you’ll see the entire edit history.

Twitter said in April that it was at long last starting to test an edit button. There were indications early on that the feature could include an edit history screen. At the beginning of September, Twitter said that it had, in fact, created an edit button. It published a test tweet at the end of the month and, a few days later, the edit button is going out into the wild.

The company is still technically testing the feature — it’ll be available as part of the Labs section of the $5 per month Twitter Blue service. Moreover, you can only edit original tweets and quote tweets, according to a support page. Many types of tweets cannot be edited, such as threads, replies, retweets, pinned tweets, Super Follow tweets and ones you draft on third-party apps.

Still, it’s a start. Twitter’s approach to the edit button makes sense in terms of keeping things as transparent as possible. It’s easy to imagine news organizations making changes to a breaking news tweet that’s going viral as clarifications or more details come in. Maybe if Twitter opens up the edit button to everyone, they’ll be able to fix innocuous typos like “sneak peak” without too much strife.

If you’ve been following the progression of DJ apps lately, you’ve probably noticed that extracting stems on-the-fly from your existing library seems to be trending. Serato DJ has now joined the game, offering its own tool for doing just that: Serato Stems. While the final product is slated for a release later this year in both Serato DJ Pro Lite 3.0 and DJ Pro 3.0, existing users can test drive it with the public beta that’s available now. This lets users kick the tires on the upcoming release and provide feedback to help improve the final result.

Serato DJ’s stem-isolating tools are similar to other offerings, letting you separate vocal, melody, bass and drums from any track. Additionally, you get effects including a vocal echo, instrumental echo, instrumental braker and drums echo. These can be accessed directly in the desktop app or assigned to the slicer or sampler performance pads on supported controllers. As you use these tools, you’ll see grayed out or highlighted portions of the waveform corresponding to your selections.

The stem analysis does take a fair bit of processing power, so it’s ideal for users with an M1 or M2 Mac. However, for those on slower laptops, you can pre-analyze select files by dropping them into a “Stems” folder in the crates sidebar. This can take care of the heavy lifting in advance so you don’t have to worry about analyzing tracks as you go during a live set.

Serato has said the company didn’t use AI for their results. Instead, it developed its own algorithm to handle the audio separation. We had a chance to briefly test the new Serato Stems feature and the results are promising. They do vary depending on the tracks you’re using, but even on muddled tracks the quality of isolated segments sounds good and any sound leakage for the various channels seems minimal.

Overall, the Serato Stems feature is fun and easy to use. Plus, it opens up lots of creative opportunities when you consider both the stem isolation and the related effects. There will be more information about this new feature when it’s officially launched later this year. For now, existing Serato DJ users can find the public beta on the company’s website.

Telecoms slow to adopt anti-robocall measures could soon face stiff punishment in the US. The Federal Communications Commission (FCC) now plans to remove seven voice service providers from its Robocall Mitigation Database for failing to comply with required anti-spam efforts, such as implementing STIR/SHAKEN call authentication to prevent spoofing. The companies have 14 days to “show cause” why they shouldn’t be removed. If they don’t, all their customers will be blocked from making calls. Effectively, their voice businesses are finished.

The companies include Akabis, Cloud4, Global UC, Horizon Technology, Morse Communications, Sharon Telephone and SW Arkansas. In all cases, the companies failed to share their anti-robocall plans even after the FCC warned them about violations. The FCC noted that STIR/SHAKEN is necessary for any provider with an IP-based network, and those without IP still have to show that they’re mitigating illegal robocalls.

The FCC required that all carriers use STIR/SHAKEN by the end of June 2021. Major carriers like AT&T and Verizon (Engadget’s former owner) were quick to adopt the technology. Small providers received extensions, but only so long as they detailed how they’d limit robocalls.

Removals aren’t likely to significantly stem the tide of spam calls. However, the FCC’s move (along with a campaign from state attorneys general) could discourage telecoms that either skimp on anti-robocall defenses or knowingly profit from scammers and telemarketers.