| It could be that One of the Companions will give there life to go back and stop the doctor getting shot and therefore preventing his regeneration, much in the same way that that singular Darlek almost lost his life in bringing Davros back.
If the TARDIS is attack while he is regenerating, its possible that's why we saw it on fire. I too am kinda hoping the TARDIS will get a slight makeover. I do like the way it looks but from day one, i've always thought it looked a bit too much like Moyra |