Looks like a new patch went out the other day for MVC3. Here's what it includes! 
 
-Sentinel's health is now 905,000, down from 1,300,000.
-The Haggar/Spencer freeze glitch is fixed.
-The Spencer loop is gone (A medium hit could keep people in the air indefinitely)
-Hitstun deterioration on Akuma's air Tatsu is now more severe, preventing his infinite.
-This update sets the game up for the new Event mode. 
 
I'm at least glad for the first change. Sentinel is still the hardest hitting character, and his use in tournaments was getting kinda stale. Does this screw up anyone's  roster?