Microsoft releases Windows 10 Build 21370 Today, the software giant rolls out a new build to Insiders in the Dev Channel. Advertisement Build 21370 improves the Bluetooth audio experience with a unified audio endpoint and support for the AAC codec. There have also been some small adjustments made to icons in File Explorer’s address bar, the touch keyboard launch animation has been made smoother, and if you set focus to the Run dialog, the touch keyboard will now show a backslash (\) key. Fixes in this build include: [News and interests] Fixed an issue where hovering over the news and interests button sometimes may not open the flyout.