https://www.bleepingcomputer.com/news/microsoft/microsoft-leak-windows-10-2004-being-released-last-week-of-may/

A new Microsoft Driver Shiproom Schedule has leaked that the May 2020 Update will start rolling out in the last week of May 2020.

Windows 10 2004, otherwise known as the May 2020 Update, was initially scheduled to be released on May 12th, 2020, as part of May's Patch Tuesday.