i think yes. treyarch doesnt want all the issues that mw2 had on their hands. if IW had releasehd a beta than mw2 most likely would have been alot better.
I really hope that treyarch releases a beta, not just because i want to play it early, but i wanna help them solve obvious issues,
In my opinion if there isn't one by Mid August or early Sept. then there wont be one, Game comes out November weather it's Beta or Demo they like to close them a month before the game releases and that doesn't leave much room.