Doctor Who Magazine has announced the episode names as:
The Impossible Astronaut/Day of the Moon
By Steven Moffat
Doctor Who fights aliens in the United States, Nixon shows up. What more can you ask for! Oh yeah, and a major cast member dies.
The Curse of the Black Spot
By Steve Thompson
I assume this is the pirate story where they are trying to solve the mystery of the Siren. And the Silence finally shows up!!
The Doctor’s Wife
By Neil Gaiman
This episode supposedly brings back an old friend with a new face.
The Rebel Flesh/The Almost People
By Matthew Graham
I have not heard much about this episode except that it involves something scary called The Gangers.
A Good Man Goes to War
By Steven Moffat
The battle of Demon’s Run begins here…though we have no idea what that means yet…