For what its worth, I just go off the phone with a Verizon rep named Andreas (#58035). He said the below:
"During the preorder, make a plan selection. The selection doesnt matter. When you receive the phone, call customer service for activation. Tell them you were on the unlimited plan, and they will make sure that it is kept on your account"
I am going to follow this up with an email as well... you know, in writing and all... but here's to hoping that we all get to keep that sweet sweet unlimited plan.
Fingers crossed, all.
From the VZW forums, re Unlimited data: You have 14 days to request it (unlimited data) be reinstated. If you don't already have unlimited, you can't get it. It was discontinued last summer. If you currently have unlimited and upgrade to a 4G phone, call *611 immediately after you upgrade and request they reinstate your unlimited data plan.