A second "season" of Adventure Games for 2011 have been announced, but other than that we don't know. Presumably the first game (#5) will be released around the time the new season starts in the spring.
It has already been released on the official BBC website, if you are talking about Doctor Who: The Adventure Games.
It Is Called T.A.R.D.I.S
Christmas Day
The 5th one will be about the gunpowder plot.
Check the walk through on youtube.
TARDIS, the next Doctor Who Adventure Game, will be available to download and play on Friday, 27 August
Doctor Who: The Adventure Games is an episodic third person game based on the Doctor Who TV series. Each episode is available as a free download only for UK residents. They can be downloaded from the official Doctor Who website.
August 27th
Later this year.
New AnswerIt's released now. The game is called "Doctor Who - The Gunpowder Plot".Previous AnswerThere is are going to be a new adventure game 2011 october set in 1605.
It is called the Gunpowder plot
All four of them are out.