IBM Product

z/OS

z/OS is an IBM product filed under Operating Systems. Lifecycle: versioned, 20 versions listed, latest 3.2.0 (30 Sep 2025).

Operating Systems

Releases and Lifecycle

All IBM products

Release and support dates as published by IBM; dates within the next 12 months are highlighted, past dates dimmed. Retrieved 2026-10-14.

z/OS 20 versions

Version	Released	End of sale	End of standard support	End of extended support	Source
3.2.0Enhanced (IBM policy code E)	30 Sep 2025	–	–	–	[1]
3.1.0Enhanced (IBM policy code E)	29 Sep 2023	26 Jan 2026	–	–	[1]
2.5.0Enhanced (IBM policy code E)	30 Sep 2021	29 Jan 2024	30 Sep 2026	–	[1]
2.4.0Enhanced (IBM policy code E)	30 Sep 2019	31 Jan 2022	30 Sep 2024	–	[1]
2.3.xEnhanced (IBM policy code E)	29 Sep 2017	27 Jan 2020	30 Sep 2022	–	[1]
2.2.xEnhanced (IBM policy code E)	30 Sep 2015	29 Jan 2018	30 Sep 2020	30 Sep 2027	[1]
2.1.xEnhanced (IBM policy code E)	30 Sep 2013	25 Jan 2016	30 Sep 2018	31 Jan 2026	[1]
1.13.xStandard (IBM policy code S)	30 Sep 2011	31 Jan 2014	30 Sep 2016	30 Sep 2018	[1]
1.12.xStandard (IBM policy code S)	24 Sep 2010	28 Oct 2011	30 Sep 2014	30 Sep 2016	[1]
1.11.xStandard (IBM policy code S)	25 Sep 2009	–	30 Sep 2012	30 Sep 2014	[1]
1.10.xStandard (IBM policy code S)	26 Sep 2008	19 Oct 2009	30 Sep 2011	26 Aug 2013	[1]
1.9.xStandard (IBM policy code S)	28 Sep 2007	27 Oct 2008	30 Sep 2010	30 Sep 2012	[1]
1.8.xStandard (IBM policy code S)	29 Sep 2006	22 Oct 2007	30 Sep 2009	30 Sep 2011	[1]
1.7.xStandard (IBM policy code S)	30 Sep 2005	23 Oct 2006	30 Sep 2008	30 Sep 2010	[1]
1.6.xStandard (IBM policy code S)	24 Sep 2004	24 Oct 2005	30 Sep 2007	30 Sep 2009	[1]
1.5.xStandard (IBM policy code S)	26 Mar 2004	9 Sep 2004	31 Mar 2007	31 Mar 2009	[1]
1.4.xStandard (IBM policy code S)	27 Sep 2002	9 Sep 2004	31 Mar 2007	31 Mar 2009	[1]
1.3.xStandard (IBM policy code S)	29 Mar 2002	12 Sep 2002	31 Mar 2005	31 Mar 2007	[1]
1.2.xStandard (IBM policy code S)	26 Oct 2001	14 Mar 2002	31 Oct 2004	31 Oct 2006	[1]
1.1.xStandard (IBM policy code S)	30 Mar 2001	26 Jun 2002	31 Mar 2004	31 Mar 2006	[1]

Lifecycle Policy

Enhanced. IBM provides defect and non-defect support for at least five years from general availability, with optional support extensions of at least three further years for an extra charge. [6]
Standard. IBM provides defect and non-defect support for at least three years from general availability, with optional support extensions of at least two further years for an extra charge. [6]

Sources 1

IBM Product Lifecycle List (CSV) retrieved 2026-10-13

More from IBM

All 237 products