Harriet Jones won't be dead either, they didn't show it, and the Dalek must have just shot out the computer screen. She'll play a part with the Daleks somehow.
Yeah the Doctors Daughter didn't change appearance, but I agree that I think it will be to do with his hand, or Rose using the power she absorbed from the Tardis or something like that.
I'm confused about Donna. It's almost like they are making it too obvious that it's her who won't make it, which just makes me suspicious that it will end up being someone else. But then again, the constant "I'm sorry for your loss" etc... towards her, must mean something either happens to her or someone she cares about.
Didn't Davros or one of the Daleks say something about "the loss of the most loyal companion"? Hope it's not Rose.
If he said "the loss of 'A' most loyal companion" then that'll be ok.