Go Nintendo posted a newstory about a rumor of 3 new Katamary games coming in 2007, one for the PS3, one for XBOX Live and the other for the Wii.
Keep in mind that this is still a rumor, but considering that Namco has pledged 30 titles for the Wii in 2007, I wouldn't be surprised if one of them was a Katamary game.
Here's the linkWhat I find surprising is that a while back the creator dismissed the Wii as being a gimmick and looked as if the series would be Sony only for a while. Also, 3 Katamary games? As much as I enjoyed the first game, and had some moderate fun with the second, how in the HELL will they keep the games fresh?
Also, with the news of the PoP game being a wiimake, I wouldn't be surprised if the game turns out to be the first game with new motion based controls.