No Solaris 11 for Legacy UltraSPARC

I don’t do a lot of Solaris anymore, and though I’m interested in several of the new features in the upcoming Solaris 11, I wasn’t aware until today that it wouldn’t run on most legacy UltraSPARC systems:

Moving a Solaris 10 Zone

Today I wanted to move a Solaris 9 zone running on a Solaris 10 test server to a new ZFS dataset within the same ZFS pool with compression enabled.