http://www.gamingunion.net/news/kitase-unsure-of-final-fantasy-type-0-western-release--5423.html
I think, at this point, they are waiting till after the Japanese launch to announce it.
"As you may know very well, with the PSP market, the situation is very different in Japan than outside of Japan," said Kitase when speaking to us at E3 2011. "We are having to be very very careful in how we decide what would be the best way to deliver the game to all the gamers."
Kitase then went on to ask Western gamers for patience as they look for a resolution, "At the moment I can't give you any confirmed decision, so please be patient for a little bit longer."
I think, at this point, they are waiting till after the Japanese launch to announce it.