It was expected that Nintendo would detail the new 3DS Circle Pad Attachment peripheral during their press conference last night. It was also speculated that the peripheral would be something Monster Hunter specific, designed and created by Capcom. Neither held true when Nintendo revealed the peripheral after the conference online last night. Retailing at ¥1,500, the peripheral will be an officially supported add-on and will be available later this year on December 10, alongside the release of Monster Hunter 3 G, which will include support for the peripheral.

Last night, Nintendo hosted a 3DS-centric press conference that revealed a variety of new games, details on existing titles, and a number of release dates and windows. The leaked peripheral that will feature a second circle pad wasn't featured at the show, though details were revealed officially by Nintendo on their website. Monster Hunter 3 G, which will utilize the peripheral, was showcased in depth, and its sequel, Monster Hunter 4 was officially revealed for the 3DS and teased with a short trailer.

Starting at 11PM EDT tonight, Nintendo's pre-TGS, 3DS-centric press conference can be seen here streaming live! Now that Famitsu has spilled the beans on Monster Hunter 3 G and the second circle pad attachment, it's likely these items will come up during the conference. We'll likely learn if the attachment is just for the game or if Nintendo has bigger plans for the peripheral.

Last night, scans from the new Famitsu magazine have confirmed the rumor that a second circle pad peripheral is coming to the 3DS. According to the article, the peripheral was spurred by a port of Monster Hunter Tri, Monster Hunter 3 G. In addition to adding a circle pad, the peripheral will bring a second R trigger button, adding further functionality to the system.