According to NBC Sports:The latest update is that he is a true game time decision. I'm monitoring this one closely since I have Kelce in my work Fantasy league. The Chiefs won't announce his official status until around an hour before kickoff I'd imagine. Even if he does play I don't know how effective he'll be and I sincerely doubt he plays more than 50% of the snaps because I don't think they'll push him with it being the first game.
"There’s a chance he’ll dress and not play much — or not play at all. He has a $44,000 roster bonus tied to being on the game-day roster."