iBUYPOWER Revolt - Dimensions 16"x16"x4"
The high-end Revolt includes an overclockable i7-3770K, a GeForce GTX 680, and an SSD for $1,399. Those are pretty high-end specifications before you start getting into Sandy Bridge-E or multi-GPU gaming systems. To improve cooling, Revolt supports the option to mount a liquid cooling full-size 140mm radiator. iBuyPower is taking pre-orders now, and will be shipping Revolts in February 2013.
http://www.ibuypower.com/Info/Revolt/home.aspx