As part of our open source hardware movement, we have released the schematics and Eagle files for both the Copper AVR32 stick and the Megavore XMEGA header board with Arduino-compatible pinout. The Magnetovore is not yet ready for release, but will be soon(tm). The information is available on the download server:

http://dl.stackfoundry.org/hardware/

As described in the Schematic and PDF, the license used is the Creative Commons Attribution-Share Alike 3.0 Unported license.

Stay tuned for some of our other projects (looking at the NXP1768 and the MSP430)!