You’ve been waiting for it for ages. I’ve had questions from lots of people when it’s going to happen so they can ditch their old SQL 2005 boxes, and now it’s finally here.
As per this link on Nexthop, all (so that means your back-end, Archiving, Monitoring, CMS, everything) is now supported on SQL Server 2008 R2.
Expect all the relevant TechNet docs to be updated soonish.
Now who’s your SQL guy’s best friend huh? 😀