Windows 94

Windows 94 (Codename Cairo) is a Windows version of the 9x line. It was released on 7 June 1994

Version history
This is the entire library of all betas.

Pre-Alpha (Build 05a)
Compiled on June 10, 1992. A very early compilation, which is why it calls itself "Windows 3.1". But the version number has changed, since it is now 3.2.

Alpha 1 (Build 10f)
Compiled on 5 July 1992. A later build,