Nintendo didn't find any spare time to mention it on stage during the 3DS press conference tonight, but it really is shipping that odd-looking circle pad add-on. The "extended slide pad" is up on the gaming company's Japanese home page right now, with a shipping date of December 10th and a price of ¥1500 ($19.50). There's also a list of supported games available, including Monster Hunter Tri G, BioHazard Revelations, Snake Eater 3D and more. It's powered by a single AAA battery, which our country cousins at Joystiq note probably means you won't be getting any e
