Some news. I'll spoiler out the dangerous stuff.
First of all Bernie Cribbins gets a recurring role! Yay!
And Bernard Cribbins has a small role?
“He plays a character who’s gonna crop up again in the series several times - he’s gonna be playing a recurring character. There’ll be a separate press release about him and what he’s gonna be doing. It’s a great privilege to have him on set, he’s wonderful.â€
Here's the answer to your questions about the Titanic
"it’s not the real Titanic. It’s a spaceship that’s full of aliens and is hovering above Earth and they’re doing a bit of an experience cruise to the planet Earth, basically, so they’ve built their spaceship to be a replica of a famous Earth ship. And they beam down onto the planet secretly and have a little look round and stuff so... yes, it’s their Christmas cruise and they’re celebrating an earth Christmas. It’s a theme cruise.â€
Here are the episode titles we know so far
1 Partners in Crime
4 The Sontaran Stratagem
? Planet of the Ood
Donna and the Doctor visit 5 alien planets during series 4.
UNIT are back baby. Not just in the background back but back for an entire episode. Right in the middle of stuff. RTD has spoken.