TSA:
Some clever chaps on the Official EU PlayStation Forum noticed a short addition in a post elsewhere on the internet. That post originates from Eidos' official forum, titled 'The Official Batman: Arkham Asylum FAQ'. The stickied post contains amalgamated information from loads of sources to define as much about the upcoming game as possible, ranging from the pre-order details to the different exclusives for each platform.
Under the PlayStation 3 exclusives, there's a few points that we already know, including the Joker DLC. Under this, however, we learn that the 'Batcave Outpost' will be coming as an apartment for PlayStation Home for free. We've seen free costumes and other items given away for free before in Home as promotional stunts for released movies such as Star Trek and Transformers 2. It's very likely that the same is now being done for the release of Batman: Arkham Asylum. Whether or not this content will remain available for a limited time or not is still up for debate.