On August 26th, the Edinburgh International Television Festival will screen episode 8 of Series 6, Let's Kill Hitler, and they have released a synopsis for the episode, which you can view below,
In the desperate search for Melody Pond, the TARDIS crash lands in 1930s Berlin, bringing the Doctor face to face with the greatest war criminal in the Universe. And Hitler. The Doctor must teach his adversaries that time travel has responsibilities – and in so doing, learns a harsh lesson in the cruelest warfare of all.
Sounds Intriguing, we'll have to find out what it all means this autumn!