Who's the new Autobot coming to Prime?

I heard there's going to be another Autobot coming to TF Prime and it might be a Prime. Who do you think its going to be?
I think it might be Ultra Magnus or Grimlock or it might possibly be Sentinel Prime. Okay Sentinel was evil in "Dark of the Moon" and was a jerk in Transformers Animated but who knows this Sentinel might be much better than the two previous incarnations.
Who do you think it's going to be?
I think it might be Ultra Magnus or Grimlock or it might possibly be Sentinel Prime. Okay Sentinel was evil in "Dark of the Moon" and was a jerk in Transformers Animated but who knows this Sentinel might be much better than the two previous incarnations.
Who do you think it's going to be?