Arduino Due Mini/Nano

While not a Mini/Nano, I look forward to an ethernet Due. Phy ethernet and SD card can do some pretty awesome things. I have a Sam3X-EK at work for a project and the demo is pretty slick with a rich web interface but the demo is based on BeRTOS which doesn't have a large community and has custom drivers. Atmel just added "native" lwIP support to asf and will add SD card drivers in the next version(November hopefully)
Are the Due drivers ASF-based or from scratch because of licensing issues?

I wonder how the Due firmware would work with the Sam3X-EK, Atmel doesn't even sell the processor(SAM3X8H) on the board.