It was only last February that Two Tribes announced their pursuit of Toki Tori 2 on Wii U, and in the six months since, they've not only succeeded, they've also developed a feature exclusive to Nintendo's next console. The Tokidex (perhaps a play on the Pokedex on Nintendo 3DS) will showcase the photos of various fauna you encounter in the game. The Wii U's Gamepad will function as a camera that allows you to take snaps of environment and in doing so, capture the various creatures you come across for your later perusal.
Toki Tori 2 arrives "sometime soonish". Until then, there's a new trailer on Wii U and Steam to enjoy.
Toki Tori 2 Trailer for Wii U & Steam! [Two Tribes]