For the Battlefield fans out there, you should check out the new demo for 2142. Its available for download from most gaming sites, such as Internode (for australian fans).

Anyway, the game is pretty cool, it has changed quite a bit from BF2. In the new TitanMode for example, there is a lot more emphasis on teamwork for you to win. Also, most of the vehicle weapons are specific now, so you can't really use the same gunport to kill infantry as to destroy other vehicles. And the classes have now been combined down to 4, so for example the Aussault/SpecOps/Medic classes are now just Assault and the Engineer/Anti-Tank is now just Engineer. I like the futuristic take (especially the Drop Pods) the game has taken though, but don't take my word for it just download it and have a look yourself.