IBM z/OS (EOS) End of Support
This page provides key end of support dates for IBM’s z/OS operating system. It covers general availability, end of marketing, and end of support dates to help IT professionals plan their upgrade cycles. With z/OS being phased out, this summary of lifecycle milestones assists in migrations.
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Key Lifecycle Milestones for IBM z/OS
General Availability (GA): The latest date that a version/release of the product is available to all users, regardless of language or media. A product version/release is not published on the Lifecycle web site until the GA date.
End of Support (EOS): The last date on which IBM will deliver standard support services for a given version/release of a product.
End of Marketing (EOM): The effective date on which a part number ceases to be included as active and can no longer be ordered in standard price lists.
z/OS Lifecycle Policy: Standard
Lifecycle policy Standard provides defect and non-defect product technical support for a minimum of three years from the date the product release was made generally available by IBM. Following a product’s announced End of Support date (EOS) there is the option to get support extensions for at least an additional two years for an extra charge set by IBM (Standard ‘3+2’ support).
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IBM z/OS EOS Dates
| Version | General Availability (GA) | End of Marketing (EOM) | End of Support (EOS) |
|---|---|---|---|
| 2.5.0 | 9/30/2021 | 1/29/2024 | 9/30/2026 |
| 2.4.0 | 9/30/2019 | 1/31/2022 | 9/30/2024 |
| 2.3.x | 9/29/2017 | 1/27/2020 | 9/30/2022 |
| 2.2.x | 9/30/2015 | 1/29/2018 | 9/30/2020 |
| 2.1.x | 9/30/2013 | 1/25/2016 | 9/30/2018 |
| 1.13.x | 9/30/2011 | 1/31/2014 | 9/30/2016 |
| 1.12.x | 9/24/2010 | 10/28/2011 | 9/30/2014 |
| 1.11.x | 9/25/2009 | 9/30/2012 | |
| 1.10.x | 9/26/2008 | 10/19/2009 | 9/30/2011 |
| 1.9.x | 9/28/2007 | 10/27/2008 | 9/30/2010 |
| 1.8.x | 9/29/2006 | 10/22/2007 | 9/30/2009 |
| 1.7.x | 9/30/2005 | 10/23/2006 | 9/30/2008 |
| 1.6.x | 9/24/2004 | 10/24/2005 | 9/30/2007 |
| 1.5.x | 3/26/2004 | 9/9/2004 | 3/31/2007 |
| 1.4.x | 9/27/2002 | 9/9/2004 | 3/31/2007 |
| 1.3.x | 3/29/2002 | 9/12/2002 | 3/31/2005 |
| 1.2.x | 10/26/2001 | 3/14/2002 | 10/31/2004 |
| 1.1.x | 3/30/2001 | 6/26/2002 | 3/31/2004 |
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