Another possibility is that they did not want to disclose ship dates because they do not want to deal with cancellations and lose business to other vendors who can ship/deliver before they can...
Agreed. That is a possibility. But not one that I'm inclined to think likely. B&H has earned its good reputation and earned my "benefit of the doubt" in this case. Moreover, it isn't clear that this is what is happening. Are any large U.S. retailers shipping in quantity before B&H? Not that I'm aware of. My point isn't that B&H can do no wrong here. It is that they have not yet done wrong here... and they have done plenty right by their customers in the past.
Come Friday, if Amazon, Adorama, and Best Buy are shipping to all of their pre-orders and B&H isn't, then complaints would be legitmate. I doubt this will happen and my excellent experiences with B&H are enough reason alone for me to give them the benefit of the doubt UNTIL such time as they prove otherwise. To speculate that this could happen and suggest acting now accordingly is what is ridiculous, in my opinion.
Again, I'm an excited 3-year, too. I'm excited about this camera arriving. If I weren't, I wouldn't be reading or posting here.