Yeah. Before my order number was 17 digits, now all of my orders are 4 digits then 10 digits.
I don't think that's it though. If I log into the Premier site, I get a 17 digit order number starting with 1012.... and if I log into just ATT.com, I get a 4 digit-10 digit order number. So two numbers for the same order on the different sites.
But your information makes sense as someone else mentioned that an exec at ATT had said that there will be quite a few overnight deliveries. So let's wait and watch.