Famitsu 360, a Japanese publication covering the Xbox 360, has just posted it's annual Developers Interview issue. Last year's issue contained several juicy rumors, including the fact that Lost Planet 2 and Dead Rising 2 were in the works and due on PS3 as well as 360. As you would imagine, the interviews mainly deal with what Japanese developers will be doing with the 360 during the ensuing year.
Koei had an interesting response, though. They told Famitsu 360 that they were working on a couple games with Natal support, but the majority of their upcoming unannounced games would be available only on the PS3. Nothing further was really specified.