at least, I think so.
http://www.xbox.com/en-US/news/2005/0224-sakaguchi.htm
they wont be releasing any Final Fantasy games for the new Xbox, but "the father" (Hironobu Sakaguchi) of the final fantasy series will be releasing RPGs under his own company (Mistwalkers).
That hasn’t been proved, yet.
Square Enix hasn’t decided what next-generation system Final Fantasy will be on yet. The only confirmation we have is that Mistwalkers WILL be working on the Xbox 360. Square-Enix could very well choose the Xbox 360 as well, if they believe it will sell more.
you’re pretty easy to scare, huh?