Greetings from the field!
A few days ago we released FIM 2010 R2 Hotfix 4.1.3451.0. Like all FIM hotfixes, it is a cumulative meaning you will get all the new features and bug fixes of prior hotfixes (and Service Pack 1 if you haven’t installed it yet).
See also my article: What is the latest version of FIM? which links to a Wiki of our public releases.