If you want to use the Atmega-2560 there is no reason not to use the Bugfix-v1.1.x branch. The feature set is identical with the Bugfix-v2.0.0 branch.
We are using Re-ARM boards with RAMPS boards as the 'Reference Platform' to bring up the Bugfix-v2.0.0 branch. Half of the people with 32-bit processors helping with the effort are using Re-ARM boards.
The USB-Serial does work. I know this for a fact because I use PronterFace with my Re-ARM board.
And... That Re-ARM board is plugged into a Folger Tech i3-2020 machine which has a 20x4 character display on it. It works just fine. (You need to break out 3 or 4 wires from the LCD Cable and plug them into the unused ethernet connector on the Re-ARM board.)
We are using Re-ARM boards with RAMPS boards as the 'Reference Platform' to bring up the Bugfix-v2.0.0 branch. Half of the people with 32-bit processors helping with the effort are using Re-ARM boards.
The USB-Serial does work. I know this for a fact because I use PronterFace with my Re-ARM board.
And... That Re-ARM board is plugged into a Folger Tech i3-2020 machine which has a 20x4 character display on it. It works just fine. (You need to break out 3 or 4 wires from the LCD Cable and plug them into the unused ethernet connector on the Re-ARM board.)