The Share conference took place last week in Pittsburgh. The focus at Share was on many topics including Cloud, Analytics, and the latest on z/OS 2.1.
There were several sessions on OMEGAMON and OMEGAMON related topics at Share. Here's a list with links for the material:
Learn the Latest Problem Solving Solutions for z/OS and Storage Subsystems with OMEGAMON
Learn the Latest Problem Solving Solutions for CICS and MQ with OMEGAMON
OMEGAMON XE for Storage - VSAM RLS and z/OS copy Services Monitoring
If you are interested in V5.3 I suggest you check out the first two links.