So I currently have a droid x with unlimited and I would like to get the next iphone when it comes out. I am wondering if my current unlimited data plan will be grandfathered in? Or should I jump the gun and commit now with and iphone4? I really have no need to upgrade now my phone works fine. So I am content to wait. However if it means missing out on unlimited data I might need to reconsider and upgrade now. I rarely hit that much data but its just nice to know I have nothing to worry about.