Toshiba is all set to launch a 55-inch glass-free 3DTV in the US by the first quarter of 2012. The TV is the first to be released in the US, with a 4K resolution, which is 3,840 x 2,160 pixels. The LCD maintains its superlative HD resolution in 2D mode; however, it drops down to 720p when displaying 3D content. Besides the need to wear 3D glasses, the technology is upgraded to enable face tracking to fine-tune the experience for up to nine people. While this model has already been launched in Japan and Germany as Regza 55X3 and 55LZ2 respectively, Toshiba is expected to display another prototype at the CES this year. There is no information yet on other details, but we reckon it could be a tad expensive than the already existing $10,000 price tag for its siblings overseas.