MLG Dallas - No Halo?

Well we were planning on going, but I'm noticing Halo is not mentioned on the list...

http://www.majorleaguegaming.com/competitions/55

I heard a lot of the Halo guys were going to BO2 for the competition but I thought it was just because they weren't happy and that there'd still be some people playing Halo... but now that I think about it I do seem to remember someone mentioning they didn't have Halo anymore.  You guys already talk about this in a thread you can point me to? If not any deets?  And is anyone planning on going despite?