There's some new support that's just been added to Ops Center 12.3.0. SPARC M7 and T7 servers are now officially certified, and Oracle Solaris 11.3 is certified, both as a managed OS and for the EC and PC systems.
There are some new and updated docs to go along with this support, as well. There are two revised how-tos that explain how to discover and manage these servers:
There are also two new how-tos, which aren't directly related to SPARC M7 or T7 but which you might find useful regardless:
Take a look at the What's New document for more information.