January's EGM is running a rumour about the next coming of Katamari, and how it might be making an appearance on not only the Wii but on Xbox Live Arcade as well. The Wii version sounds intriguing, but really, will it be anything more than the same old game with novel, twitchy controls? I hope not, but my magic 8-ball says "LIKELY".
An XBLA version sounds both more probable AND profitable. Then again, if Keita Takahashi isn't behind the wheel during development (which he won't be), neither will probably end up being any good, and we needn't concern ourselves.