OMEGAMON currency support for z/OS 1.12 is being provided for both OMEGAMON Versions 410, 420 as well as later releases of OMEGAMON XE products on z/OS.
To have currency for z/OS 1.12, you will need to be fairly current on maintenance. Also, there will be maintenance that applies to common code shared across multiple OMEGAMON tools.
For a link to information on the recommended maintenance for z/OS 1.12:
Also, here is a link to a forum if you have questions: https://www.ibm.com/technologyconnect/pip/listforums.wss?linkid=1j3000