Every final fantasy game since at least 7 was released in europe, there's no reason to think that 12 won't be released there. There's no date because they don't know! They have to get it finished and released in Japan, and translated to english for north america, before they can translate it into all those other languages and fix it to work on your weird TVs.
What was the last original Square game not released in europe? Xenogears? 7 or 8 years ago?