Microsoft Windows 2020

Microsoft Windows 2020 is the the first release of the new "Windows" set of releases. Yearly updates to "Windows" will come every year, starting with Windows 2020. Announced in late 2019, and released to the public on July 14th, 2020, Windows 2020 brings tons of new features and an all-new, consistent user interface. Windows 2020 is a free upgrade from Windows 8, 8.1, and 10.

Code
Note: There's four Pre-Technical Preview builds. 1st is earliest, 2nd and 3rd is early Pre-Technical Preview and 4th is real Pre-Technical Preview.

Windows Server 2020
Windows Server 2020 is also another second version of Windows 2020 but it is bundled with Windows 2020 this Windows is mostly for business servers and storage for important files.

Build 25575
This is earliest Pre-Technical Preview build and this hasn't been leaked yet.

Build 28099
First build of Windows 2020 was fast ring released on August 13, 2019. Changed boot screen.

Build 18562
Released on September 22, 2019. Nothing is changed.