Nintendo is creating a HTML5 friendly development environment.
Nintendo Web Framework is being revealed at the Game Developer's Conference (GDC) this week.
Nintendo is holding a panel today about Wii U development with Nintendo Web Framework at the "Nintendo Wii U Application Development with HTML and JavaScript" panel.
Nintendo Web Framework allows development using HTML 5, Javascript, and CSS. It supports Javascript extensions along with Wii Remotes and the Wii U GamePad. The goal of Nintendo Web Framework is to create far faster development cycles on the Wii U for games and applications.