No, You Won't Have To Pay For This.

But it's not. Infinity Ward's community manager Robert Bowling clarified:

“For the record, nobody has to pay to play COD or MW2 multiplayer, nor will they.”

Josh Olin of Treyarch had a similar thing to say regarding Call Of Duty: Black Ops.

“No, you will not have to ‘Pay to Play’ Call Of Duty: Black Ops multiplayer either. Rumor squashed.”

Perhaps you can get some sleep tonight then?