It should be announced around 11am (ET) on Monday, Sept 16.
There are only 7 B10 games that day and two are on the west coast. Rutgers and Washington will play the night before.
Illinois Penn State will not be a noon game (homecoming) and Nebraska /Purdue is locked in at Noon (homecoming)
There is nothing that screams out for a Noon FoX broadcast and Oregon/UCLA and Wisconsin /USC seem likely for CBS and NBC.
other games are Minnesota@ Michigan, and Ohio State @ Michigan State.
I presume that FOX will see how the first three weeks shake out and make informed decisions to maximize ratings. IU /Maryland kind of screams BTN.