There is no real point to this page. A few years back, someone wasn't sure of a release date for a certain version of Windows, so I dug up the information and posted it on my site.
More information on Windows releases:
http://en.wikipedia.org/wiki/History_of_Microsoft_Windows
Windows 1.0 - November 1985
Windows 2.0 - December 1987
Windows 3.0 - May 1990
Windows 3.1 - April 1992
Windows for Workgroups 3.11 - February 1994
WinNT 3.51 - June 1995
Windows 95 - August 1995
Windows NT4 - August 1996
Windows 95 OSR2 - October 1996
Windows 98 - June 1998
Windows 98SE- May 1999
Windows 2000- February 2000
Windows Me - July 2000
Windows XP - October 2001
Windows Server 2003 - 2003
Windows XP 64-bit - 2003
Windows Fundamentals for Legacy PCs - July 2006
Windows Vista (Business Customers) - November 2006
Windows Vista (Retail Customers) - January 2007