Only yesterday did people learn that a new Wario game was being released for Wii but when people heard this they didn't know whether it was a Wario Land game or just another Wario Ware game. Well now here is your answer.
Wario's newest adventure is indeed a side-scrolling platformer that will be making use of 2D artwork to showoff and depict the stages and characters. The game is being designed to make happy both casual and hardcore gamers so no one will be disappointed and with that being said there will be a total of 20 stages. Each stage will have a unique environment so you won't get easily bored of the stage designs with some stages being set in jungles, deserts and caves.
Controls however are a different matter with very few waggling of the WiiMote being incorporated and only being used to make Wario do a few extra special movies or controlling the vehicle that Wario will be driving. So how will Wario be being controlled, well like all Side-scrolling platformers the WiiMote will be held horizontally on it's side and most controlling of Wario will be done through the D-Pad and the 1 and 2 buttons.
As posted here yesterday the game will be released in Japan on July 24th with no word on an international release date yet.
Update: MrMordern has posted this Picture of the game