When I placed my preorder for the 44 mm gold I was number 81. I have been at number 49 for two days now.
@Meowmix good to know
I'd imagine that the demand for AW3 is probably quite low given the fact that Apple really didn't discount it that much after the AW4 was launched. Might as well use that excess capacity to churn out more 4's
It's a technical limitation, since the Apple Watch will have the same number than your iPhone, both devices have to be on the same network since you cannot register the same phone number with another company.