I looked and didn't see anything recent posted about this. Just saw an article on the Michigan Daily's website quoting Chicago Tribune article about potential venues for the Big Ten football title game. Interesting quote:
"David Gilbert, president of the Greater Cleveland Sports Commission, told The (Ohio) Morning Journal that he expects the game to be rotated among cities and that non-domed stadiums should not be ruled out. The game likely would be played on Dec. 3, 2011,"
Indy, Detroit, Cleveland, Chicago and mInneapolis were the five cities mentioned prominently.