thanks xp30, Thats probably right. The synth was curiously missing the Roland and AX-EDGE logos on the body, and 4 of the buttons (Exit, Enter, Shift, Menu) had been relabeled to match production models. And there was no serial number on the body. But it seems to be fully functional. I just uploaded the 1.1 firmware update successfully.
So, what is a pre-production model? How did it make it out into the world? Does Roland just give out those to their vendors prior to release to the public? Will Roland technicians service the unit in the future?