Windows 10 build 21370 is now available with Bluetooth audio improvements Apr 29, 2021 13:15 EDT with 7 comments Microsoft missed its typical Wednesday schedule for a new Windows 10 build release in the Dev channel, instead giving us another pipeline test update. We're still getting a new build this week, though, as Microsoft is now rolling out build 21370 from the co_release branch. This build is a bit lighter on features than last week's release, but it does pack a significant improvement for anyone who uses Bluetooth earbuds or headphones on Windows 10. Now, users will see a unified endpoint for a Bluetooth device, instead of seeing two different items. These two items were used to distinguish between a speaker-only channel, which offered better audio quality but no microphone input, and another channel meant for communications, which enables the microphone but offers worse audio quality. Now, only a single item will be chosen, and Windows automatically switches between them. Another improvement for Bluetooth audio is support for AAC codecs, which should offer better audio quality.