System Center 2012 Operations Manager Update Rollup 1 is now available and can be downloaded here
Update Rollup 1 contains a number of fixes for System Center 2012 Operations Manager, including cross platform fixes, as well as support for Oracle Solaris 11.
A number of fixes may require manual steps to install. A detailed list of fixes can be found on Knowledge Base Article KB2686249 - http://support.microsoft.com/kb/2686249 .
The System Center 2012 VMM/AC Update Rollup 1 is also available, that one is to be found here
It applies to Virtual Machine Manager and App Controller only, so you'll need to install both packages.
The monitoring pack for System Center 2012 - Operations Manager monitors availability of VMM and the availability, health, and performance of all virtual machines and virtual machine hosts that VMM manages.
More information about Update Rollup 1 can be found here
As always, make sure to test this before deploying in a production environment!