Not sure anyone knows. The Big Ten website doesn't even list ice hockey as a sport yet even though they have already announced ticket sales for the conference tournament next year (yea, it's not about the money, really, it's not).
Conventional wisdom would say 4 games against each conference team, 2 at home and 2 on the road, that would account for 20 games of the season. That would leave about 12 or 14 non-conference games. Michigan will probably try to schedule games from the other conferences and I think they might try to include some of the former CCHA teams, especially the Michigan based schools. I don't think we will know for sure until sometime this summer.
I have included a link with the tournament info if you are interested.