upgrading to solaris 11.1

Using OC 12.1.2.0.0 (b2161) and solaris 11.0 0.5.11-0.175.0.0.0.2.0 .

Want to upgrade to solaris 11.1

Document http://docs.oracle.com/cd/E27363_01/doc.121/e25144/toc.htm

States that:

An issue with Oracle Solaris 11.1 prevents Oracle VM Server for SPARC management on Oracle SPARC T4 servers using the Oracle Solaris 11.1 operating system. Until this issue is fixed, only the Oracle Solaris 11.0 operating system should be used for Oracle VM Server for SPARC Control Domains.

Which is a bit annoying (were using T4).  

Does anyone know about the "until this issue is fixed" part?

thanks