Hugh Jackman Returns Again as Wolverine in 'Logan'

The next Wolverine standalone movie is probably going to be most notable for being R-rated for the first time. In the wake of Deadpool's success, I guess that was inevitable, although since every X-Men and Wolverine movie up till now has been PG-13, I'm thinking it might feel like a tonal departure in a negative way. All it's going to be is more violent, as you can tell from the last bit of this trailer and where Logan's claws end up. The other thing that jumps out at me here is how exactly Patrick Stewart's Professor X is still alive in this clearly far off future where the slowly aging Logan is now an old man. Xavier ages normally, doesn't he? Or is it some die effect of his telepathic powers?