Windows Neptune build 5000

Windows Neptune build 5000 is an unconfirmed and controversial build of Windows Neptune. Screenshots of this build were uploaded to BetaArchive by member Battler on 11 October 2008.

Controversy
The screenshots, the build itself, and the member who posted them have been a source of much controversy, with many under the assumption that the screenshots and the build are fake. However, there is currently no evidence to prove the authenticity of this build since there is not enough information about the development of Neptune in its early stages.

Possible proof of existence
It is possible that build 5000 may have existed. Files  and   from Neptune build 5111.1 contain a dialog window with placeholder text saying " ". This suggests that Neptune builds were only in the 5xxx range and the first build may have indeed been 5000.