The news is already out there, but I thought I'd just write a quick note on it as well.
On MSDN, you can download Service Pack 1 for FIM 2010 R2 and BHOLD. Note that there are two versions available - one for new installs and one for upgrades to existing installations.
I've yet to play around with this new Service Pack - and with support for newer versions of Windows Server 2012 and SQL Server 2012, it looks as if I've got my work cut out testing and I also need to upgrade my PowerShell kit for that automates FIM2010 R2 / SharePoint 2010 installation scripts to support the new version.
As far as I know there is no official KB article or document telling us exactly what the news in this release is. So I guess everyone is looking for to that and I will definitely want to read that before I upgrade any production environments.
As I dive into this new service pack, I'll be sure to share my findings - so stay tuned.
UPDATE. Jorge has a little more information to share on this here (http://jorgequestforknowledge.wordpress.com/category/forefront-identity-manager-fim-sync/)