https://www.bleepingcomputer.com/news/microsoft/windows-10-21h1-coming-soon-here-are-the-new-features/

Earlier this week, Microsoft officially announced the Windows 10 version 21H1 update and it'll begin rolling out to consumers in the first half of this year. Like the October 2020 Update (20H2), this new update also comes with a minimal set of features, general improvements, and bug fixes.

Windows 10 version 21H1 is essentially based on version 2004 and version 20H2, and it'll be delivered via an enablement package. It's not a huge release and it does not bring a major overall to the operating system, but reports suggest that new features and UI improvements will be introduced later this year as part of 'Sun Valley' update.