Microsoft is gearing up to release Windows 10 version 21H1, aka the Spring Update, as they broadly release the feature update to all Windows Insiders in the Beta channel.
For some time, we have known that Windows 10 21H1 will be released as an enablement package that will turn on features already available but dormant in Windows 10 2004 and Windows 10 20H2. Using an enablement package allows the new feature update to be installed very quickly for those running these versions of Windows 10.
Windows 10 versions in 2021 that is 21H1 and 21H2 what we know right now
Source: Bleeping Computers