Just got off the horn with Verizon
You can add a new line and keep unlimited data.
You can preoder and add a new line to your existing account at 3:01AM EST and not lose it in a simple way.
GO to My Verizon, Click PRE SELL.. Add the new line. Purchase the iPhone you want on the NEW line.
Find yourself a dummy phone [a non smartphone phone line a Moto Razr or flip so you'l only be charge $9.99 for the extra line instead of $40 for a smartphones typical data package. Then switcht he iphone 5 to your smartphone line
You can keep unlimited data, NOT pay $600,700,849 for a iphone, just at the extra cost of $10 a month.
Only issue is you have a phone with a new two year contract. No biggie..
Wouldn't that only work for people on family plans ?