The entire MINDSTORMS system is powered by the new EV3 Intelligent Brick. Stronger and faster with more memory and a larger processor, the EV3 Intelligent Brick now un-tethers robots from the computer by providing users expanded on-brick programming and tighter integration with smart devices. A new infrared sensor will give builders more control over their robots than ever before, adding more personality to the robot as it follows the builder or other devices. New Linux-based firmware, a USB port and SD expansion slot will offer nearly unlimited programming and expansion capabilities. Additionally, LEGO MINDSTORMS EV3 will also include full iOS and Android compatibility out of the box.
http://aboutus.lego.com/en-us/news-room/2013/january/new-smarter-stronger-lego-mindstorms-ev3/