That's right! MMS 2011, scheduled March 21-25, is officially sold out. This hasn't happened for several years; between the recession and the Icelandic volcano in 2010, attendance has lagged a bit recently.
This should be an interesting year for attendees. Last year, the message was cloud, cloud, cloud. Look to that continuing, but with the v.Next (2012) versions of the various System Center scheduled for release beginning late this year and into 2012, it should be an ideal time to hear where Microsoft is going with v.Next and how that might affect your current implementations. It's certainly not too soon to begin planning for those changes.
For one, all new releases are anticipated to run on 64-bit servers only, e.g. Windows Server 2008 R2 and above. If you're still running your installations on Windows 2008 or Windows 2008 32-bit, you won't be able to upgrade, as you'll need to use new hardware.
Looking at the list of scheduled breakout sessions, there's a mix of information on best practices and uses for the current version of products as well as sessions on the upcoming releases.
With all the hype going on about the various System Center v.Next rollouts, lets not forget Windows 8 Server. Maybe we'll get some hints on that as well.
If you want to find me, come to the System Center Operations Manager 2008 R2 Unleashed book signings / giveaway Tuesday and Wednesday from 1-2 and 3-4 pm at the ClearPointe booth, booth #122. I'll also be at the keynote session to report on what's new in System Center land, as well as at various breakouts.