http://www.ps3-sense.nl/2009/10/ps3-versie-modern-warfare-2-is-gelekt-de-game-heeft-een-third-person-optie/
It's from a well-known Dutch gaming site.. In the link there is a video which shows leaked footage of the PS3 version of the game. Robert Bowling talked about a big announcement earlier, and it's likely that it will be about this. The third person option will not be for the whole game, but for a few modes.. I can't say I like it..
Thoughts?