I saw a recent question about LDOM versions that come along with Oracle Solaris versions:
"I'm looking at upgrading some of my Control Domains to Oracle Solaris 11.2 SRU 8, which comes with LDoms 3.2. If I upgrade, will the new version be supported for migration?"
LDoms 3.2 is not yet supported by Ops Center, so if you start using it, you'll find that Ops Center won't know how to find migration targets for it.
If you're interested in which versions are supported, keep an eye on the Certified Systems Matrix; we'll add new versions there once they're certified.
EDIT: As Jay Lake pointed out in the comments, MOS Document 2014856.1 contains a workaround for this issue:
On all CDOMs in the pool, add the following line to /opt/sun/n1gc/etc/ldoms.properties:
Then restart the agent on the CDOM.
Repeat for all cdoms in pool.
EDIT 2: Ops Center 12.3 supports LDoms 3.2.