Freescale iMX6 EOMA-68 CPU Card

Freescale i.MX 6Series

http://cache.freescale.com/files/32bit/doc/fact_sheet/IMX6SRSFS.pdf based on ARM® Cortex™-A9 MPCore™ Processors**

SoloLite (single core) http://cache.freescale.com/files/32bit/doc/data_sheet/IMX6SLCEC.pdf
Features: 1 GHz, DDR3, USB 2.0, USB OTG, 10/100 Mbps Ethernet, 2D graphics, OpenVG™ 1.1 accelerator

Solo (single)/DualLite http://cache.freescale.com/files/32bit/doc/data_sheet/IMX6SDLCEC.pdf
Features: all of the above + Gigabit Ethernet, PCIe-II, UART, I2C, and I2S serial audio, HDMI1.4, OpenGL ES 2.0 (3D)

Dual/Quad http://cache.freescale.com/files/32bit/doc/data_sheet/IMX6DQAEC.pdf
Features: all of the above + 800-1200 MHz, SATA-II, OpenCL support

Is it enough to build Open-Source drivers for its VPU ?

Yes. There's even two v4l drivers in progress for the coda9xx vpu:
https://lwn.net/Articles/502587/
These still need closed source firmware for the bit processor, but the ARM side is open.

The VPU block is from Chips and media:

http://www.chipsnmedia.com/product_search/product_view.php?part_idx=20&idx=53 The VPU requires proprietary firmware. This is the only part preventing the iMX6 from being FSF-Endorseable.

Has the GPU been reverse-engineered?

YES. https://github.com/laanwj/etna_viv/wiki

What's pricing like for the iMX6 CPUs?

At time of writing:

Links

http://www.openbricks.org/2011/12/31/introducing-early-support-for-freescale-i-mx6/
http://www.freescale.com.cn/cstory/ftf/2011/pdf/1166.pdf
http://www.cnx-software.com/2012/02/24/low-cost-freescale-imx6-quad-sabre-lite-development-board/
https://github.com/imx6-dongle/wiki/wiki
https://community.freescale.com/thread/305797