We got the first wave of order letters out on Thursday evening. They just made the 6PM cut off at our local post office. Everyone who signed up before 3/1 now has a letter on the way.
We sent a test one to ourselves and that arrived Friday. We also had a few orders trickle in via fax, so we know they are starting to get out, at least in the Bay Area. By next Tuesday - Thursday they should have found there way to everyone.
The second wave will be put together on Monday and go out on Tuesday for those people who signed up after 3/1 or got us a mailing address after the first wave. Pretty exciting time right now for us!