We are working on a new release for both Mountaineer boards. Unfortunately it has taken much longer than we originally planned, due to the higher priority of the commercial [em]Mountaineer Prime[/em] firmware (http://www.mountaineer-boards.com/prime/).
However, the core of the [em]Mountaineer Prime[/em] firmware will be used for the original Mountaineer boards as well, and we will release it as firmware binaries and as open source for both boards, like before. Just without the special Prime features.
The new release will fix a number of bugs. Networking in particular should benefit, as first tests of the software at a customer’s site have shown (on the M4-MCU hardware).
It is difficult for me to give a more precise date, but it won’t take until Christmas.