It'll be a Kirby May Day!
http://www.nintendoworldreport.com/news/36561
Kirby Triple Deluxe will launch on May 2 in North America and May 16 in Europe.
Featured in today's Nintendo Direct, the catching horn ability was shown in detail. There are a number of collectables as well, such as keychains that will help you progress in the game. The keychains can be obtained via the StreetPass feature in the 3DS. Those who use the StreetPass feature will also be able to obtain items from people they come across who also have the game.