Resistance 3 is for sure. I happen to think GT5 very well may be delayed untill fall 2k10 also.
Killzone 3 no. They will alternate years and it's Resistance 3's turn, plus there was a movie picture that confirmed a Resistance 3 billboard.
Motorstorm 3 I dunno, the second was a bomb so I doubt it's in Sony's thoughts.
Last Gaurdian, will be critically acclaimed but not mass market.
Gears of War 3 almost surely will not be 2010 either imo. Microsoft will not support and market two powerful shooters in the same holiday season. Plus from CliffyB's comments, Gears franchise is undergoing a major revamp (to make it more RPG-like), so it could probably use extra development time anyway.
PS3 motion control does have a probable name if rumors are true, just not a very good one. It's said to be called "Gem".