I hope to shed a little bit of light on how these rollouts usually work:
The reason for a rollout like this is to keep congestion down. This we all know. Because of this, rollouts are usually NOT done regionally. You can still only put so much traffic on a tower, and if you were to rollout to a whole region, you're still causing congestion, which is counter-productive since the whole reason you're doing the staggered rollout is to NOT have congestion.
It's usually done that the carrier decides how long they want the rollout to last, and how much congestion they feel their towers can handle at any certain time so as not to affect other service. Based on these factors, they choose X amount of people per area to receive the update at certain intervals. So, there's really no rhyme or reason as to who receives the update first.
This way, congestion is spread out more evenly across their servers, and they are not jamming up towers with everyone in one area trying to update their phones. The people that are chosen to receive the update within each batch per region IS RANDOM. It doesnt have to do with your SSN, your Phone #, how long you've been a Verizon customer, how many kids you have, how many miles you drive in your daily commute or whatever other random reason you could think of lol
Even though we feel like we are a large group, you've got to remember that in the whole scheme of people out there that own Dincs, we're a very small community, and that is probably why it seems like it's "taking so long" for this update to roll through. There's much more of us out there than we think!