Today I want to comment on some discussions on VSE-L related to latest z/VSE announcements. Again there are good answers from the VSE-L community.
The VSE-L posts are under the z/VSE 5.2 here and here.
Let's start with z/VSE 6.1.
z/VSE 6.1 was previewed on May 11, 2015 with a GA date planned in 4th quarter 2015.
z/VSE 6.1 requires an initial installation. Fast Service Upgrade from z/VSE Version 5 (5.1 or 5.2) to z/VSE 6.1 is not possible.
z/VSE 6.1 requires a z10 processor or higher.
z/VSE V6.1 can run in LPAR mode, or as a guest in any supported z/VM release - as prior releases of VSE.
The z/VSE 6.1 preview announcement letter is here.
With the z/VSE 6.1 preview we made a statement related to z/VSE 5.2 too:
To ease the migration to z/VSE V6.1, z/VSE V5.2 will still be orderable after general availability of z/VSE V6.1 for a transition period.
That is the end of marketing (eom) announcement (z/VSE 5.2 is no longer orderable after the eom date) for z/VSE 5.2 will be some time later.
We don't have decided yet, when this will be. My assumption is that the end of marketing (eom) will be after the z/VSE 5.1 end of service (June 30, 2016 - see below).
... but that's my personal opinion.
Also - there is no announcement yet for a z/VSE 5.2 end of service (eos) date. To look at the history for a lifetime (GA to end of service) might help, but that's not a commitment.
z/VSE release GA eom eos years of service
4.1 03/2007 10/2008 04/2011 about 4
4.2 10/2008 11/2010 10/2012 about 4
4.3 11/2010 06/2012 10/2014 about 4
5.1 11/2011 05/2014 06/2016 about 4,5
5.2 04/2014 ???? ???? ????
You can find those dates on our status web page - here (for releases in service) and here (for out of service releases).
The z/VSE 5.1 end of service date was announced last August. It is June 30, 2016. See the related announcement letter - here.
There is no need to upgrade to z/VSE 5.2 first and then go to z/VSE 6.1. That is you can directly go from z/VSE 5.1 to z/VSE 6.1.
However, if you want to stay in a supported environment and can't upgrade until June 30, 2016, I would recommend to upgrade to
z/VSE 5.2 first and then go to z/VSE 6.1 later - or you may ask for a service extension.
The same is true, if you are running your z/VSE 5.1 on a z9 processor and can't upgrade the processor before the z/VSE 5.1 end of service date.
Last August there was another end of service announcement that may affect z/VSE customers:
IBM z/VM, V5.4 will continue to be supported until December 31, 2016, or until the z9® EC and z9 BC are withdrawn from support, whichever is later.
IBM will provide notification to any change of the planned withdrawal date for IBM z/VM, V5.4.
The IBM zEnterprise® EC12 and IBM zEnterprise BC12 are planned to be the last System z servers supported by IBM z/VM V5.4 and the last System z servers that will support IBM z/VM V5.4 running as a guest (second level).
That is z/VM 5.4 can not run on z13 processors. ... and z/VM Version 6 requires a z10 or higher.
z/VSE 5.2 is our last release that supports z9. We don't have statement like for z/VM 5.4 (yet).
Remark: zEC12, zBC12 and z13 do not support ESCON channels.
I hope, I answered all questions. If there are more, just let me know.
Ah, before I forget it: We plan to prepare a migration white paper with hints & tips for a z/VSE 6.1 migration, to be available at GA. Let's see how that goes.