THQ has confirmed that UFC 3 will be released in March 2012 and will be playable at E3 this June.
"In March a new UFC game for FY12 will be released as well and will also have revamped tech and will be aimed at both the core and casual fighting audience. This game, and the ones mentioned above will be shown or chatted about a bit more during at E3"
Danny Bilson, THQ developer, has also confirmed this on Twitter.
Saw a killer demo of UFC 3 this week. Will blow people away at E3.