Microsoft announced the development of Windows in 1983, a graphical user interface (GUI) for its own operating system (MS-DOS). The 3.x and 4.x family includes DOS, Windows 95, Windows 98 and Windows ME. The DOS-based Windows for Workgroups 3.11 achieved the breakthrough from 16- to 32-bit networking and 32-bit disk access. Windows NT family started with NT 3.1 in 1993. Modern Windows operating system versions are based on the newer Windows NT kernel.

A compilation of screenshots of Windows versions since Windows 1.0 with their release dates & Info is as listed :

Windows 1.0

Release date : 20 November 1985 (info)

Windows 2.0

9 December 1987 (info)

Windows 3.0

Release date 22 May 1990 (info)

Windows 3.11

Release date 27 July 1993 (info)

Windows 3.11 NT

Release date 6 April 1992 (info)

Windows 95

Release date 24 August 1995 (info)

Windows 98

Release date  25 June 1998 (info)

Windows 2000

Release date 17 February 2000 (info)

Windows Millenium Edition

Release date 14 September 2000 (info)

Windows XP

Release date 25 October 2001 (info)

Windows Vista

Release date 30 January 2007 (info)

Windows Seven

Release date 22 October 2009 (info)

Windows 8

No screenshots yet !! And , Probable release would be in the year 2012.