I dont really believe it. But you all are better at pointing these things out than me.
http://xxthamerxx.wordpress.com/2008/01/21/ninja-gaidan-2-on-ps3/
Says its from latest EGM. Preview is for both PS3/360. Timed Exclusive? Typo? Or just plain bogus?
(One thing to point out, this guy spelled "Gaiden" wrong.)