No new news at all since the release announcement in September, other than a "90% done" note on New Year's Day on the developer's website. No word at all about a US release either, but seeing as how Nintendo themselves are publishing it, I'm very optimistic it will come here. Nintendo as the publisher also means it is extremely unlikely Culdcept will be on the Vita.
I can't wait for an update, but I have a feeling the game will magically appear first. That seems to be how OmiyaSoft rolls.