Two Tribes is working on a sequel to its adorable Game Boy Color (and later WiiWare, PC, iPhone, etc.) puzzle platformer, Toki Tori, ten years after the first game. Toki Tori 2 is scheduled to be released on PC and Mac in spring of 2012, with "subsequent releases on downloadable stores from Apple, Nintendo and more" to follow.
If you're interested in playing the game before that release window (and before it's done), you can write to tokitori2[at]twotribes.com for a chance to get one of 200 copies of the "Steam development version." If you don't make it into that group, you'll just have to follow the development blog or (appropriately) Twitter for your baby chick updates.