Very intersting combination of a Freescale ARM i.MX6 and Arduino Due base board.
http://www.kickstarter.com/projects/435742530/udoo-android-linux-arduino-in-a-tiny-single-board
Looks like target price will be in the $109 range, obviously more expensive than the Rpi but with plenty of more features, more memory, better MCU, etc. Looks very interesting.
Target date is September 2013.
Cheers
Jorge