This might interest some people!

http://xbox360.ign.com/articles/802/802313p1.html

I have played the original Katamari a few times and it was fun, but I don't know how much this would appeal to others. Especially since the original fanbase may already have PS3's. 

I read that a long time ago, dont really know what people even like about the game?

Like I said I'm not sure of it's appeal on a widespread base. I don't know how much of a following this game has. Will this upset PS3 owners? Will this help Microsoft bring in more casuals?

A game that is most popular in Japan is coming exclusively to the least selling console in Japan... MS must have paid lots of dough for this one and I don't think it was worth it business wise.

I'll still probably at least check it out.

I dont think it will be exclusive, rumor has it a Wii version is in the works.

From http://www.jolt.co.uk/index.php?page=chat.php

"As revealed by Japanese gaming magazine Famitsu, the development team at Namco decided to pull the plug on the PS3's Katamari not because of flagging sales (as previously suggested), but because they accounted 'programming problems' on Sony's next-gen system"

The very same Famitsu article also confirmed that Katamari is coming to the Wii, so it's also coming to by far the best selling console in Japan.

No it wont.

 That makes more sense.

 Agree, but I don't understand why they stayed on xbox360 if it is mainly a Japanese game. I mean shouldn't it be better going Wii/PS3?

For one thing rob, the game was fairly succesful in NA. It was a cult game to be sure, but there's a market for it in all a regions. Because of that, it makes sense to have it on the 360, as it has a large NA userbase, and obviously the Wii, since it sells well everywhere.