[jacquesm]

If they had delivered when they first promised there would be no issue at all. But once you go across your self-imposed deadline you have to make sure that those that pre-ordered are kept in the loop on the hows-and-whys.

It's like BP estimating the outflow from that leak way too low. If their estimate had been 'on target' or 'high' there would have been no problem, by estimating too low they've set themselves up for all kinds of trouble.

The interesting thing is that I don't see any perceived cost in overestimating, but a significant cost to underestimating.