This year, BYU has asked Stately Type (a BYU grad who has a pretty awesome t-shirt design business) to design the game day shirt. The cool thing I've liked about stately design is that he usually puts together a few designs and then lets people vote on which one they like. This week he will be posting three designs and let his followers vote which is best on his instagram page.
He has posted the first one now.
https://instagram.com/p/2_RbiXNCDu/
https://instagram.com/statelytype/