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http://www.eurogamer.net/article.php?article_id=150384
Some new tidbits -- missions can have crossovers involving both NPC and PvP players.
Accounts will be made transparently available to either PC or PS3 login.
The game seems to have about a 100 hour play time.
I think this had been mentioned previously but the game is expected to scale missions well for solo or group play using success rankings -- as a solo player you may complete the mission, albeit with a bronze star, but can only achieve gold by using a team to achieve all objectives.