The £40 pre-order is the limited edition and you get the back to karkand
map pack (says so at the end of the new trailer) with the limited edition. My understanding of that is that it is 4 re-made BF2 maps (but I can't remember where I heard that - perhaps on the rewind video or it could have been speaking with clan mates? (it was last night!!)). Karkand is a given I expect but then I would guess Wake Island is a near certainty and then maybe Jalalabad is a poplular choice. Personally I would love to see Sharqi again but who knows, they may pick a spec ops map or one of the add-on (euro forces/armored fury) type maps.
The good thing is that it is a PC-lead title - they are developing it for the PC and then dumming down things like server size for the consoles. 64 players again for PC. Oh how I have been looking forward to another 64 player FPS - it just raises new levels of utter carnage!
Dice have said this is a direct sequel to BF2 rather than BC2 (which apparently will have very limited influence on BF3). I am hoping this means the return of things like:
1) 6 man squads.
2) squad leaders (no more spawning on everyone)
3) commanders + commander map - with the added ability of squad leaders to issue squad orders like they could in BF2.
4) 5 classes again - medics having assault rifles and support having the ammo/LMG combo
Some people are complaining that they are putting in a single player but I always like a nice bash at SP and tbh they are in a huge head-to-head with Activision (CoD) for supremacy and can't really avoid having one IMO.
BF2 was without doubt my favourite game (infantry only really) and as such I am a little scared at how excited I am getting. I hope I am not building this up in my head into something they can't possibly achieve!
The sooner you get behind, the longer you have to catch up.