The MSC you see released is merely a re-boxed 2010 version which is done every year for competitive reasons....they all do it...and I wish they wouldn't!
The 2011 product is in fact still in public beta testing, but when released, any valid subscription will auto-upgrade to the newer version when it becomes available. Release times vary world-wide as it's impossible to release to every single server simultaneously.
If you're interested and have a spare machine or partition with a spare operating system on it you could test the beta and give feedback. The more bugs that get reported the better! Support is via Bug Reports and a private section of these forums.