MSU has released its 2013-14 schedule, you can see the whole thing here.
We knew most of the nonconference stuff. Notable for the Big Ten schedule, single plays are: vs. Minnesota, vs. Nebraska, at Wisconsin (RIP #BorderBattle, #RealRival) and at Purdue.
They start with two road games, including Penn State on New Year's Eve. The regular season ends at Ohio State, so that could be a big one.