The new Nintendo 3DS slide pad which was leaked by Japanese gaming magazine Famitsu last week has today been made official by Nintendo and will be arriving in Japan on December 10th.
The Nintendo 3DS slide pad adds an additional analogue stick to the right side of your console and will be compatible with Monster Hunter 3G, Resident Evil Revelations, Metal Gear Solid: Snake Eater 3D, Ace Combat 3D Cross Rumble, Dynasty Warriors and Kingdom Hearts 3D.
The Nintendo 3DS slide pad seems to be a large chunk on plastic for just a additional analogue stick and rather than providing additional battery power to your 3DS. The Nintendo 3DS slide pad will require a AAA battery to function.
When it arrives in Japan on December 10th 2011 the Nintendo 3DS slide pad will be priced at ¥1,500 around $19. But unfortunately at the current time no European or US pricing or release date has been announced by Nintendo.
Source: Tech Buffalo