There's a combo deal of builds for Windows Insiders today, as Microsoft is not only rolling out Windows 11 build 25231 in the Dev channel, users in the Beta channel are getting their own update, too. Since the Beta channel is split into two branches, some users will be getting build 22623.875, and others will be getting build 22621.875. The former has new features enabled, while the latter has them turned off by default.
For users running build 22623, the big news with this build is that the tablet-optimized taskbar that's been in testing with a limited subset of Insiders for a while is now available to everyone in the Beta channel running this build. This is similar to what happened with the Dev channel build released today. However, unlike the Dev channel, users in the Beta channel may not see the new system tray experience just yet - that one is still rolling out gradually. Additionally, the Task Manager button that was added to the context menu on the taskbar is also now available to everyone on build 22623.875.
Aside from this, there are a couple of fixes exclusive for Windows 11 build 22623.875, which include the ability to expand the taskbar by swiping up with a pen. For users with the new system tray enabled, there's also a fix for a problem where the hidden icons panel on the system tray might block context menus opened after it.
As usual, some fixes are applicable to both build 22623.875 and build 22621.875, and you can find those below:
And finally, there are also some known issues in this build, most of them related to the tablet-optimized taskbar. The full list is below:
If you're in the Beta channel, you can check for updates right now in the Settings app to get Windows 11 build 22623.875 or 22621.875. If you're on the latter branch and you want to get the new features, simply check for updates again after installing today's update, and you'll see an update that enables the features and changes your build number to 22623.
Source: Microsoft