I think this game deserves a lot of attention. Socom 2 was the best online game I've ever played, even better than Halo or COD. A lot of people never played Socom because it wasn't hyped up like other games, but Socom 1 and 2 were really fun online games.
Socom 3 was a disappointment to most people who played the older Socoms, the maps were way too big and addition of vehicles ruined the game.
This game according to the developers, is going to be made more like the older Socoms and they are trying to please all the fans. I should note that this game is being developed by a diff company than the company who developed the original games. The company that is developing this game is Slant Six, the company that made the original games was Zipper. I think Zipper is still helping out though.
They have put up a website:
SOCOM.com - PS3 - Screenshots, Videos, Game Features, Forums, Message Boards
They post blog updates about the game and read and respond to fan's comments. If this game is anything like the originals (Socom 1/2), it is going to be a blast to play online.