The latest version of Edge, using Google’s Chrome engine, will lose Flash support in January 2021. Windows 10 Flash support will officially die at the end of this year, with no further updates for Internet Explorer 11 and the legacy (non-Chromium) version of Edge by December. It doesn’t remove Flash from Microsoft Edge or other browsers, either.
However, as Bleeping Computer noted, the update (KB4577586) only removes the Flash version bundled into Windows 10, and not any standalone versions you’ve installed yourself. Microsoft has released an optional Catalog update that removes Adobe Flash from Windows 10 and prevents it from being reinstalled, paving the way for the eventual death of the app in 2021.