A couple of weeks ago Windows Insiders on the beta channel could opt-in and download the latest Windows 10 21H1 update (build 19043.844). Now Microsoft are pushing out the 21H1 update to all Windows Insiders on the beta channel. So if you haven’t already download 21H1 and are on the beta channel you should automatically get the new update.
There is not a lot of changes with 21H1 but you can read more about it on What’s new with Windows 10 21H1 update.
21H1 is now being offered as a recommended update to all #WindowsInsiders in the Beta Channel. Insiders who didn’t choose to install 21H1 will now automatically receive 21H1 in the Beta Channel. Details here: https://t.co/Gq4ltkv3XG ^BLB
— Windows Insider (@windowsinsider) March 2, 2021