If you mean the announcers for the actual BYU-Utah game on ESPN, there is a strong possibility you are referring to either Adam Amin, Matt Hasselbeck, or Molly McGrath. ESPN already announced that Thursday nights would be handled by them this year, although there is another earlier game (UCLA at Cincinnati) that they may be assigned to. If that is the case, I'm not sure who they will get for the later BYU-Utah game and it could be anyone.

If you really did mean the ESPN College GameDay crew that travels around the country every week, I'm not sure why you said "announcers for the BYU Utah game," but Week 1 for College Gameday is already set...they are going to be in Arlington, Texas for the Oregon-Auburn game on the 31st. Maybe you are just referring to them making some kind of mention of BYU-Utah throughout their show or during their prediction picks at the end of the show?