It's a VIA VAB-600 Springboard. There are some other VIA ARM boards that can do mini-PCIe (though some just USB, some do PCI too)

VAB-600: http://www.viaspringboard.com/ or http://www.viaembedded.com/en/boards/pico-itx/vab-600/

VAB-820: http://www.viaembedded.com/en/boards/pico-itx/vab-820/ (better software, Freescale SoC)

VAB-1000: http://www.viaembedded.com/en/boards/pico-itx/vab-1000/ (at the moment Android only)

I hope to try other vendors' ARM boards too, I've made a list a few weeks ago of those that have mini-PCIe connectors, so plenty to experiment with....

(disclaimer, I'm currently working at VIA)