The foundation put their houses on the line to raise the money to bring the RaspPi to market, and that included around £170,000 for the first 10,000 boards. We all knew that it was going to be over-subscribed by maybe ten times. There were 100,000 people on the mailing list and this forum. Nobody could afford £1,700,000 to make all of those in one batch. In fact it turns out that it was over-subscribed by over one hundred times, making the prospective cost of manufacture seventeen million pounds.
The first few lucky 10,000 (5,000 for RS and 5,000 for Farnell) will start getting theirs I expect sometime next week.
The rest of us will have to wait. If there were 2 million requests, then they would have to order 200 times more than the initial batch. It might not be possible to order that many on the 4-week lead time that RPF was quoted on their initial order, and it would be a silly way to order them in case demand dried up.
What they may do is place an order for say 100,000 a week, but there would be a delay of about four weeks before the first of those rolled off the production line.
So we see delivery estimates from 4 weeks upward. I guess those that have been quoted 13th March (IIRC) are the lucky 5,000.