OS 400 timeline | Timetoast Timelines

Aug 26, 1988

V1R1
Nov 25, 1988

V1R1M2
Oct 27, 1989

V1R2
Sep 28, 1990

V1R3
May 24, 1991

V2R1
Mar 6, 1992

V2R1M1
Dec 17, 1993

V2R3
May 4, 1994

V3R0M5
Nov 25, 1994

V3R1
Dec 22, 1995

V3R6
Jun 21, 1996

V3R2
Nov 8, 1996

V3R7
Aug 29, 1997

V4R1
Feb 27, 1998

V4R2
Sep 11, 1998

V4R3
May 21, 1999

V4R4
Jul 28, 2000

V4R5
May 25, 2001

V5R1
Aug 30, 2002

V5R2