It says there will be no crossover episodes so i doubt it...UNLESS it is a HUGE flop and they put the Doctor in to boost ratings.
I hope it doesnt flop as all that refering of Torchwood in DR WHO will have been a waste of time and will TOTALLY alter how the last two series are seen....a partial advertisement for a BIG STINKER of a spin off.
Then again it might be good and it would have been worth it.