I didn't even know a PSP version was in development. Not any more! Along with the latest Ubisoft release schedule came the news that the game has been canned. Not sure why, maybe it didn't do so well on the Wii and DS.
Heck, if you're desparate to learn Spanish on your PSP, you could give Talkman a try. Oh, Hell's Kitchen for Wii has been moved to Q4, though I doubt anyone's going to lose much sleep over it.