i dunno. i've heard a couple random things on random forums.
i'm not going to jump to any conclusions until i hear it straight from EA. Madden is EA's best game, and i dont think that they will just get rid of the Madden Challenges. Maybe they'll cut cities off. Maybe they'll switch the formats, but one way or another I dont see them just cutting it off.
and even if they did cut it off, this is the first i've heard of MLG picking it up, and i think that would be fine. as long as there is something. i love the challenges, i've played in 11 of them over the years.
Portal 
