S**t Siri Says

There's extremely little point in using your upgrade just to go from 4 -> 4S. The hardware improvements aren't enough to justify being locked out of buying another phone for two years (unless you enjoy spending a lot more than you need to) when the next gen will be here in the spring which will have everything the 4S has and a lot more, including newer form factor.

Do note I said upgrades, not upgrade. There are 4 lines on my plan. And by all means, please post a source for a new form factor being released in the spring as opposed to the summer or fall.