oct. 2010 i signed myself up for a 2 year contract and my wife up for a 1 year.
oct 2011 I go in to get a new phone for myself using my wifes upgrade.
They did so, but told me that for whatever reason, my line was eligible for an upgrade at the same subsidized price. I said "no way, you must mean that i'm eligible for an upgrade at DISCOUNTED pricing". They said, "well, we do that (Discounted pricing even if your 2 years isn't up) but your line is eligible for the EXACT same upgrade as your wifes". I still didn't believe them. I called verizon corporate help and they confirmed the same thing. I even broke it down in stupid: I said "I just paid $199 for a 16GB 4s on my wifes line... You're telling me that I could pay you another $199 for another 16GB 4s on my line right now today?" They said yes.
I don't remember the reasoning to be honest. Some special promo I guess.
The moral of the story is that upon further discussion they explained that normally I would be eligible at DISCOUNTED pricing at 1 year into a 2 year contract. That is, instead of $199, it's $199+$70 or something and they will let me re-sign.
My advice to you is to call them and inquire about DISCOUNTED pricing cause I think they've been doing this for a long time.