As mentioned in the "Scarlet & Gray Days" Preview article (and as evidenced in the video), during practice at some point in the last week, Coach Beck pulled JT aside and told him (regarding QB reps): "make sure you take most of these because we're getting game-ready and this is the stuff we want to work on."
Unless this is somehow taken out of context (which I can't imagine it is), it appears JT is going to be the starter.