Starting in early 2017, Microsoft has promised to release two Windows 10 feature updates each year, one in the spring and the other in the fall, essentially six months apart each time. The next feature update for Windows 10 Version 2004 is expected to be released in April/May this year, and Microsoft is currently working on a final fix.
Microsoft is currently inviting Windows Insider members to test Windows 10 Version 2004 (20H1) feature updates, which may be called May 2020 updates when they are officially launched.
Windows 10 Build 19041 update, Windows PowerShell’s Get-VM HostSupported Version list shows Windows 10 May 2020 Update and Windows Server 2004″ two search results.
From this clue, the next feature update may follow the previous month naming rules to enable the name of the May 2020 feature update. Of course, if Microsoft chooses to provide an update in April, it may enable the name of April 2020, but that’s not likely.