Technically
The show’s Facebook page have just released this behind the scenes picture showcasing Capaldi and Jenna Louise Coleman (shout-out for her as the wayward Lydia Bennett in the Beeb’s recent Death Comes to Pemberley) on set, and Capaldi’s waistcoat and long purple overcoat look like a fine change from the cool teacher-y look of his predecessors. There’s almost some of the Pertwee about him, though I wouldn’t say that to his face.
Here’s the first picture of the man himself in costume – click to make it bigger on the inside.