Planetside 2, Sony's free to play massively multiplayer online first person shooter (F2PMMOFPS?!) has a closed beta now, which you can sign up for here. The focus is on huge battles over persistent worlds, where the balance of power will constantly shift between the three warring factions.The scale is impressive, with truly enormous maps, and hundreds of players fighting at the same time.
The combination of large air and land forces fighting over these big alien planets is really attractive. The drama and experiences that are possible with a game on this scale sound excellent. Planetside 2 looks good, with beautiful alien landscapes and impressively large structures. It's not quite up to Warface, but it's polished enough. I'm really looking forward to playing Planetside 2 - it sounds like my kind of online game.