Cyber Arcade revealed a new accessory for the Nintendo XL in Japan, called Cyber Arcade Stick. Just like the name, it’s an arcade stick controller for the console that is used as an accessory that will be sold for 3,002 yen (almost $30).
It looks like the accessory is aimed mostly for fighting games such as Super Street Fighter IV: 3D Edition and possibly Super Smash Bros for 3DS (which will be released soon for the console). There is no word about an international release for the accessory as of writing this, sadly.
You can see a gallery below: