Well, considering when Sony implemented the online pass, they said it would be for every game SCE published with online features, this shouldn't be too surprising. Starhawk, UC3, Twisted Metal, and Resistance 3 all had them after all, which are the games that came out that SCE published after the pass had been implemented.
What will be very interesting is to see if they keep it up, as the founders of the pass (EA) have stated they no longer are implementing online passes in their future titles. So, that leaves Ubisoft and Sony as the only two publishers who are doing it.
I used to hate the passes, but since I buy the games that have them new, I don't mind them anymore. It does affect my used purchases, though, and what I consider getting at the store. Twisted Metal is one such game, as well as Battlefield.
"Multplayer Missions" sounds co-op only. I could be wrong though.
It sounds like co-op is one of the game modes.