Nintendo has announced some new Wii U accessories for Japan, including a white premium model (which is otherwise only available in black), alongside a Nintendo Land and Wii Remote Plus bundle. More excitingly, though, they've also revealed a new larger-capacity GamePad battery that boasts double the power of the original. This 2,550mAh battery has to be manually installed, using a bundled Phillips screwdriver, but provides up to eight hours on a single charge. A vast improvement on the 2-4 hour original.
Hopefully we'll be able to pick this up in Europe at some point, along with some more lengthy, involving games to make it worthwhile. We may find out more during the global E3 Nintendo direct presentation.