Wilder got bigger. Put on muscle. Ostensibly to handle Fury leaning on him... but Fury got a bit bigger, too and a boxer doing a lot of weightlifting is counterintuitive.
Smart money is on Fury to win again. Unless Wilder suddenly figured out how to box... he's a one trick wonder (right hand) and Fury knows that trick. Fury is the better boxer, by far.
However, (comma)... if Wilder lands that one trick... it could be over.
I say Fury by TKO.