Has the board's fan speed indeed failed, or is it just accidentally set to external control? I believe the question has been asked before but not yet answered.

Also, no the V0.6 board doesn't exist yet. We just started shipping V0.5 boards, and are making the list of things to change on the next batch. V0.6 boards won't be avaibale for probably at least a month. The V0.5 boards have better connectors, more accurate current measurement, better labeling and a more solidly mounted toggle switch. Any other changes were made to help expedite manufacture.