So we are still left with unanswered questions for those debating between an AT&T or Verizon iPhone. So it appears you'll be able to get a Verizon iPhone and have Unlimited data. But what does "for a limited time" mean exactly? Should we assume that you'll be able to stay grandfathered after they switch to tiered? Should we assume you can stay grandfathered even when you upgrade to a new phone (iPhone 5, for example)?
And the Hotspot question still remains. If Verizon were to offer the Hotspot feature for free, then I would almost certainly get the Verizon iPhone. However, if I'm eventually going to end up with tiered data on either carrier, then it really comes down to who will offer up the best LTE package! Because really, if I get an iPhone this year, it will only be a stop-gap until next year when the LTE iPhone comes out.
So if I'm thinking long-term, I should be considering who will have LTE in my area first, and who will likely have the best coverage and packages available. And that, unfortunately, is still the big unanswered question.