I think I figured out why people aren't receiving the update on the Verizon Samsung Galaxy S3.
If you all remember, the previous update (which allowed roaming in Canada) had a build number of JSS15J.I535VRUCNC1. That is the exact same build number for the update that brings us to Android 4.4.2. I am assuming that since the previous update has the same build number, when we check for updates, Verizon thinks we are on the latest update. This is just a guess that I thought I should have some light shed on.
If you all remember, the previous update (which allowed roaming in Canada) had a build number of JSS15J.I535VRUCNC1. That is the exact same build number for the update that brings us to Android 4.4.2. I am assuming that since the previous update has the same build number, when we check for updates, Verizon thinks we are on the latest update. This is just a guess that I thought I should have some light shed on.