It looks like Sony's snatched this one up for Europe, but PGC gets the full story on the US release.
Sony Computer Entertainment Europe (SCEE) recently announced I-Ninja as a PS2 exclusive, releasing Q1 2004. We were surprised by the news, as Namco had already begun advertising the title for other platforms, and it seemed a bit late in the development cycle for such a deal.
We checked with our sources at Namco, and they have assured PGC that the game will still be released for GameCube in North America this fall. The recent announcement only applies to the European release of I-Ninja, which SCEE is publishing instead of Namco. Tough news for our readers in Europe, but at least they can still import the title from other regions.