Cumulative Update 5 for System Center Operations Manager (SCOM/OpsMgr) 2007 R2 was released last night.
And now RedHat Enterprise Linux 6 is supported (catching up with Hyper-V)!
There are more details on the CU5 support page.
A new Cross-Platforms management pack was also released. Oddly, the download page mentions RHEL4 and 5 as supported but not the newly CU5 supported RHEL 6. Don’t worry, the MP’s word document does mention that RHEL6 is actually supported by the new MP version. It also mentions a few other fixes and new features of the MP.