so this popped up on IGN...
 
http://ps3.ign.com/articles/107/1077373p1.html
 
 "March 12, 2010 - Overheard at the Game Developers Conference: Insomniac Games has become a multiplatform developer. The company, best known for the Ratchet & Clank and Resistance franchises, is allegedly creating cross-platform software for both PS3 and Xbox 360, according to a trusted source who spoke with IGN under the condition of anonymity.

Insomniac Games has enjoyed a long and fruitful relationship with Sony, but remains an independent studio, which affords it the right to create games for any platform should it choose. The company is based in Burbank, California. Earlier this year, Insomniac Games expanded its resources when it opened a new studio in North Carolina.

Last year, an alleged billboard advertising Resistance 3 was said to have been erected during the filming of a forthcoming feature film titled Battle: Los Angeles. Details here. Given that Sony has in the past published the series, it seems unlikely that the first-person shooter -- or, for that matter, Ratchet & Clank, also funded by Sony -- would ever appear on a competitor's console. It seems much more likely that if rumors are true and Insomniac is working on 360, it is creating something altogether new.

We contacted Sony for comment but the company was unable to respond before publish time.

Insomniac Games' president Ted Price said only that the developer does not comment on rumors and speculation. "
 
So the question is... is this true? Or better yet...would you be surprised? As we know, more and more third party companies go multi platform with the growing costs of games, and while I believe Resistance sold well, i'm pretty sure the Ratchet games (even tho I love them) haven't really been topping the charts the last few years. Now, if true, this does not mean that either Resistance or Ratchet would come to 360, since those are published by Sony, but any future IP would be fair game. For me, whatever helps great studios make money, go for it. And Insomniac is a great studio.

I'm not sure how Resistance would fare among the already crowded 360 shooter market, and I don't see R&C coming to the platform either.  I guess it would be possible for the games studio to partially break from Sony with a new IP game for both systems.  Lead on the PS3 and pick up a wad of cash from the 360 sales.  Look at Borderlands and Bioshock 2's 360 sales versus their PS3 sales.  The truth of the matter is, in North America, there still aren't as many PS3's in the wild as their are 360s.  And that is the biggest marketplace for shooter games, so if they were going to create something specifically developed to make money, then being on the 360 as well as the PS3 would be a good idea. 
 
I am all about sharing the love, so even though I own both a PS3 & and 360, the more games that everyone can play, the better.  I hope it's true, but I feel that sometimes these rumors get twisted as they work their way through the gossip vine.  Watch it be Insomniac was issued a Natal kit and that's how all this chatter began.

" I'm not sure how Resistance would fare among the already crowded 360 shooter market, and I don't see R&C coming to the platform either.  I guess it would be possible for the games studio to partially break from Sony with a new IP game for both systems.  Lead on the PS3 and pick up a wad of cash from the 360 sales.  Look at Borderlands and Bioshock 2's 360 sales versus their PS3 sales.  The truth of the matter is, in North America, there still aren't as many PS3's in the wild as their are 360s.  And that is the biggest marketplace for shooter games, so if they were going to create something specifically developed to make money, then being on the 360 as well as the PS3 would be a good idea.   I am all about sharing the love, so even though I own both a PS3 & and 360, the more games that everyone can play, the better.  I hope it's true, but I feel that sometimes these rumors get twisted as they work their way through the gossip vine.  Watch it be Insomniac was issued a Natal kit and that's how all this chatter began. "

The franchises are owned by Sony, not just published. But yeah, Sony doesn't own Insomniac and I guess their contract with them ran out and Insomniac likes them some money, so it just makes sense.

New IP could possibly be multi-platform.

Yeah, I guess Insomniac IS technically independent.....huh. You just associate them with Sony and forget the independent part.

This has been speculated ever since they started that second studio.

As long as its a new IP its possible. 
But I'm never sure about these rumors. Sometimes they're dead on and other times they're completely off base. Just have to wait and see i guess.

Due to their close bond with Sony, Insomniac gets alot of development support especially from Naughty Dog. I wonder if Sony would cut that support line in retaliation. This could be harmful to both Insomniac and Sony but that's the price of freedom I suppose.

Well I hope it isn't anything to do with Resistance or a shooter (I really found Resistance 1&2 to be..underwhelming for the hype they seem to get) but I found Rachet and Clank to be fantastic games and to have something from them on the 360 would be pretty sweet.

Ya know, IGN's inside source has been wrong on multiple occasions. Metal Gear Rising being 360 exclusive, Kid Icarus was going to be at E3 2008, and other wrong info.
Apparently PR at Insomniac has even shot down this rumor with Ted Price said that the new North Carolina studio was making PS3 games and another PR manager stating that this rumor seems to pop up every 2 months as was always wrong every time.  
 

My guess is that they will create a new IP, and perhaps shop it around. We won't see it for a long time though.

The first thing I though when I saw the title was "DUDE I CAN PLAY RATCHET GAMES AGAIN!"
 
 
Then I read the OP and cried.

as long as they keep making awesome games, im happy....

Does Insomniac own the Resistance IP, or is that also Sony's?