At the very end of the latest 1UP podcast, their last show before GamesCom, the 1UP guys talk about things they expect to see at the event. 

At aroudn 1:51:40 they begin heavily hinting that GT5 will be at the show with a release date for this year.  This is a rough transcript of the segment done by me:

"There's a Sony... big Sony game that's gonna come out this year, that people probably didn't expect."
"BIIIIG Sony game coming out this year that you might not have expected!"
"Oh.  You never know."
"And you can't give out any more hints?  Or would I be blowing your cover if..."
"Oh, it's..."
"Yeah, probably best to save something for Sony for next week."
"Vroom vroom!"
"What are you driving at?"
"Hehehehe."
"So...."

Yeah i think it will help Sony.

i luv j00.

They better or someone people are going start losing it...or already have..

The guys also said the ps3 will get a price cut in the next few weeks, but they're unsure about the Slim. They made bets on whether it'll be shown at GC. Two said yay and one said nay.

They also had an awesome segment on the Prof. Layton and the Diabolical Box. Apparently the puzzles are implemented more into the story this time around, which is awesome. Basically, instead of people asking you to solve puzzles for no reason while you're looking for clues for the overall plot, puzzles will be incorporated into the world more, ala Zelda or Indiana Jones.

As for GT5, I think it's a given we'll see a good bit of info on GT5 before GT PSP comes out.  They're probably going to try and capitalize on the cross compatability between the two titles as much as possible.

One of the cool things about GT in the future is that any car you buy in any game transfers over to other games. If you unlock a car in GT5, it becomes unlocked in GT PSP, etc. This gives PSP owners with GT PSP incentive to pick up a ps3 and GT5 (and vice versa), plus it gives people that own both consoles incentive to pick up both games instead of just one. If they hadn't implemented this feature, the thought of buying GT PSP would've never crossed my mind (I rarely play my handhelds), but now I'm seriously considering a purchase.

The functionality between both titles is an advantage for each, one that would be wasted if they released farther apart than a few months.

For similar reasons, Ubisoft is releasing Assassin's Creed PSP right alongside Assassin's Creed II, touting the functionality between the two.

There will be riot on the streets of Europe if this game doesn't hit this year lol!

My hype for Layton can't go any higher but this new info makes me much happier about the story being epic!

I'm thinking the Last Guardian will be an early Fall 2010 release.  October or so.

Sony is really on fire as a publisher at the moment. For ps3, the release slate currently looks like this:

October: Uncharted 2: Among Thieves, Demon's Souls (it's their IP, even though they aren't publishing it in the West)
November: Ratchet & Clank Future: A Crack in Time
December: Gran Turismo 5
January: MAG
March: God of War III, MLB 2010: The Show

And I could totally see White Knight Chronicles hitting in February. It's currently set for Q1 2010.  Of course, I could also see it getting pushed back to April or May.  Either way, that's about a game a month... just for ps3.  For PSP you've got Gran Turismo in October, LittleBigPlanet in November, and some other stuff.

SCE is on fire.

Ahhh i wanna just skip to december.

Heavy Rain seems May-ish. Its development has an InFamous feel to it. I know that sounds weird, but w/e.

And I can see WKC coming early in the year for the same reason I thought it'd come this year. It's already done. They're just tweaking it for the West. Hopefully the improvements will have made the year+ wait worth it.