none yet as far as I know other than a brief mention in the Iwata Asks interview with the Epic Yarn staff. I predict they only released that much to show people they are still working on Kirby titles. Consider how long it's been :p and the fact that Good Feel developed KEY. Whenever KEY is released in Europe, I think we'll see more of the DS game info, as they might want to send the same message to European gamers that may not have caught the news elsewhere.
