It has been announced Monday will see the release of a special prequel to Let's Kill Hitler on the official BBC Website. Here's what the BBC said:
Stand-by for something that's different to the previous Prequels! This one bridges episodes 7 and 8 and reveals a little about how the Doctor and Amy are feeling following the events of A Good Man Goes to War.

The Prequel is written by Steven Moffat and so as you'd expect, it has humour, drama and a heart-breaking moment... Matt Smith and Karen Gillan are on great form in the short video which you'll be able to watch on Monday.
We'll post the prequel on Monday so don't miss it! A start date for Doctor Who in the UK has yet to be announced, but it is expect to air on on 27th August 2011.