The pink puffball's next appearance is locked down for Japan: Atsumete! Kirby — which roughly translates to Gather! Kirby — is coming to DS on 7th July.
Last month we brought you the first Atsumete! Kirby gameplay details, which revealed the player will control multiple Kirbies and use their combined power to overcome puzzles and enemies. Should a Kirby die, it floats up to heaven as an angel in heartbreaking fashion.
Nintendo has not yet announced any plans to bring Atsumete! Kirby to the west, but E3 is soon, so stay tuned.