Microsoft has released a new preview build of the Windows 10 SDK for those enrolled in the Insider program. This is the first build that's part of the new development cycle after the 20H1 update.
Build 19546 RSS
Microsoft has released the latest build of Windows 10 to Insiders enrolled in the Fast ring. It doesn't have any new features aside from the new graphing mode in the Windows Calculator.
Microsoft today released a new Windows 10 Insider Preview to the Fast ring, bringing the build number to 19546. As always, there's a long list of fixes, improvements, and known issues.