It would seem that Verizon cannot make up their mind. Originally, their version of the Samsung Galaxy S III was rumored to ship on or by July 9th. Then it was confirmed for that date on their own website. Shortly after that, they changed the date to July 10th, which has been the date that held the longest. Alas, that date has changed as well, and again has been pushed back by one day. According to their own website, the Verizon SGS3 will not ship until July 11th to customers. Although there was no reason given, these delays are probably because of huge demand for the new phone.
Source: VZW