DigitalSpy has some teasers for the Eleven-and-Jo-do-SJA episodes coming up.
1. Doctors 1, 2, 3, 4, 10 and 11 all make an appearance.
2. There's mentions of Axons, Azal and Aggedor.
3. "Smells like roast chicken!"
4. The Brigadier is still stranded in Peru, while Liz Shaw is on the Moon.
5. That's Groske, not Graske.
6. The Doctor doesn't have to be white. And he can regenerate more than 12 times - a lot more!
7. "You look like someone's baked you!"
8. Jo Jones (née Grant) has 7 children and (almost) 13 grandchildren.
9. The Doctor might never look back, but Sarah Jane has discovered some interesting things using Google.
10. "Accelerate the weave!"
I am still not sure when this airs...? For that matter I'm still not sure when s4 starts. But since the overwhelming majority of you said 'yes' to discussion posts, there'll be one for every episode. Huzzah!