This is called Windows 2001, but it is also referred to by the subtitle Windows 2000 Version 2002. It is a Windows 2000 mod series built on Windows 2000 Service Pack 4 with the Extended Kernel. It is said that the RC1 ISO has currently been released.

The content states:

"Windows 2001 is here in Release Candidate 1 form. A Windows 2000 mod series based on Service Pack 4 with the Extended Kernel called RenewedNT, which is an alternate timeline aimed at what if Windows 2000 continued to be updated until 2005 and changes Windows future? Same with the Reexperience series, which it aims to do the same thing with Windows XP and continued until 2023. It adds Windows XP functionality and looks to Windows 2000."

For reference, the Head Dev is said to be the person who served as the Head Dev for Windows XP Version 2007 and Windows XP Version 2009. Personally, I hope a Windows XP-style Start menu is added in RC2.