This dealer
http://www.nztelescopes.co.nz has been selling the auto tracking dobs with the AZ GOTO hand set for over a year now, I have one and it works well, using Frmware 3.07 at present.
The only issue is some back slash in the RA gear, no matter how much you tighten the clutch, apparently some people have fixed it withTeflon bushes, but have not been able to find any direct info.