And the fact of the matter is that the Thanksgiving Day game on national TV belongs to Texas and that tradition will continue no matter who Texas plays.
Most likely that game will now be against Tech, but the rumor is that the networks want Texas v. Notre Dame on Thanksgiving.
Who currently has the TV rights to the game? NBC has the deal with Notre Dame. If another network controls the Texas game that could cause issues. Regardless, Texas - Texas Tech or, now that they're joining the conference, Texas - TCU would make for an interesting game as well.