In the latest issue of the weekly Famitsu, it was confirmed that the previously PS3 exclusive Way of the Samurai 3 was being ported to the XBox 360. There has been no formal announcement of the title being localized for a Western release, but the fact that they are porting it to the 360 lends to that. Unlike other territories, the XBox 360 has only sold a couple hundred thousand units in Japan, making a port to such a small audience seem odd. However, if the title was then released worldwide for both platforms simultaneously, that would make the port seem much more profitable.
With the 360 version due out in Japan in February, the question should be answered soon. Capcom, resposible for publishing the last Way of the Samurai title, has declined to publish this one, so whoever does pick up the title will be a different publisher.