Can I get the new iPhone without cancelling my contract?

I've got a 2 year contract for the iPhone 5c but I'd like the new iPhone when it's out. Could I just upgrade but still pay the same amount each month. So keep the same contract. I know I can pay off the whole 2 years but I don't want to do that.

I'm just wondering. Not bothered if I can't really.

How fast will the iphone 6 sell out?

I heard the iphone 6 is coming out around sept 19 and I'm looking at getting one. I was wondering if they will be sold out the same day and if they do then when will they get more? I'm talking about the verizon and AT&T stores.

Does the contract free iPhone come completely unlocked?

Does the contract free iPhone come completely unlocked?

Added (1). If I get the contract free iPhone from the apple store, which is categorized as a GSM t-mobile iPhone, will it come completely unlocked off the bat? Meaning can it work on any US carrier GSM and CDMA? Will it work internationally as well. Will have have to get any sort of code from t-mobile or is it a completely unlocked iPhone usable on any carrier right from the start?

Can I do this with my iphon?

I'm going to be getting the new iphone that was just released, and I have an iPhone 5s. (But the 5s is under a contract ) Can I just take the SIM card out and put it in the new iphone? And just use my new iphone as my daily phone? Also can you sell a phone that's under a contract?

I'm W/ fido!