The Title to Episode 4 of series six has been announced. It is called The Doctor's Wife and is written by Neil Gaiman. We already know the titles to Episode 1,2,5,6 and 7
1. The Impossible Astronaut
2. Day Of The Moon
4. The Doctor's Wife
5. The Rebel Flesh
6. Gangers
7. Demons Run

The Series is set to premiere on April 23rd 2011.