http://aboutus.lego.com/en-us/news-room/2013/january/new-smarter-stronger-lego-mindstorms-ev3/ (we all like the source)
And with details on its features and innards a story (dutch) at http://tweakers.net/nieuws/86473/lego-kondigt-nieuwe-mindstorms-robotkit-aan.html which in short comes down to:
"Its intelligent brick sports an ARM9-soc running Linux on 64MB RAM and 16MB storage memory, and supports SD cards. There are also four ports, which allow four other 'Bricks' can be connected. The intelligent brick can be reached by WiFi, USB and Bluetooth, and supports control via Android and iOS devices. It comes with 3 servo's, two touch sensors and an IR sensor to track other robots at upto six meters. It also includes 17 build plans, shown in 3D using Adobe Inventor Publisher."