There was an initial delay of about 2 weeks. These bikes were going through very rigorous QC, so not to give the naysayers ammo, and word is they found something they didn't like on an OEM part that was cosmetic, but they still didn't want to let them out the doors. Something HD could take a lesson from after reading the many horror stories about the new showerheads puking coolant.
As for selling better than expected, they sold 250 into Australia the first week they launched - considering the size of that market, that's a pretty big demand. They also ran out of the 1901 numbered bikes in about 6 weeks. They also cut back any dealers preorder of 7 bikes to 2 bikes each because of the demand from paying customers.
Are those volumes anything HD should be worried about - not yet.
I don't know any one that paid for a new bike, deposits only.