Hi FriendlyElec still has some 512M DUO boards. New stock of both 256M and 512M DUO boards will come in two weeks.
In the mean time we are working on a redesigned version.
Hi NicoD
We are testing the NanoPC-T3 Plus. So far we feel fine with this board's performance and features.
Are there anything you don't feel comfortable with it or you are not quite sure whether it will meet your application's requirements?