It doesn't come as a massive shock, but Nintendo's confirmed that Wii Fit Plus is coming to... well, the clue's in the title.

It was announced at Nintendo's E3 media briefing, which already yielded confirmation of New Super Mario Bros inbound for the home console.

The game is basically an update to Wii Fit, offering up new mini games meant to fight the flab. They include juggling, skateboarding and something called 'Perfect Math(s)'. We're not even kidding. It involves swinging your arse about to hit numbered bags and solve maths problems.

The game will be available either with the Balance Board or on its own for returning fitters.

Expect it in the back end of 2009.