Where can I find a start project for the new G400D with G400HDR board?
Go to the Community->Codeshare page and search for G400.
There are several starter projects.
You need a NETMF console project and set the framework to 4.2
@ Robby - If you want to go the Gadgeteer route with the G400HDR you can also try out the Gadgeteer Mainboard Driver. I recently updated it for the latest firmware.