It would be awesome if there is a super hidden easter egg in Arkham City that blatantly points to the direction of this game. I still remember being blown away by how long it took the community to find the hidden room in Arkham Asylum.
Wow, that's pushing it back really far. I was actually excited for this movie with the addition of The Rock and Bruce Willis but I guess it makes sense to grab that extra 3-D ticket money even if the 3-D will likely be shit.
For your needs, a 13" Air seems like a great fit and it's comfortably at your budget but I'm not a fan of the Apple Ecosystem. You would be crazy to lug around that 9 pound beast that is being suggested above if you have a decent desktop.
So it seems that by buying this Special Edition, it essentially includes their version of the season pass. I guess the rest of the stuff can be valued at about $10 which I'd rather save because it doesn't sound too interesting. I wish more games would include Making Of's like the Halo 3 Special Edition or that cool God of War leads panel in the HD collection.