How much does it cost to upgrade my iphone 4 to an iphone 5 with at&t?

Ok here it goes. I have had a 2 year contract with at&t. I'm now eligible for my upgrade. I currently have an iphone 4 and i want to upgrade to the iphone 5 when it comes out. I know iphone upgrades aren't free. How much will it cost. And is it possible to pre-order it?

(this has nothing to do with the question but if you can answer both of these and the actual question best answer is yours: Can information on another phone be transferred to an iphone 4? Like from an sim card to the iphone. And: Is it possible to save sounds you get in a text? If so how?

Why does my iPhone keep saying this

I'm trying to download the GTA 3 app and its a little over 400mb. I have 1.2gb free of space (more than enough) why won't it download! I've already deleted a ton of apps and pictures and still nothing. I'm getting mad! :/

Does an iPhone necessarily need a data plan?

Ok well I just read a question that was answered about an iPhone, does it need a data plan? And the answer said not really, I'm not sure about that but if I got an iPhone and didn't get a data plan could I still access the Internet (safari)

Why is my iPhone volume so low?

I just got an iPhone 4S. The sound works fine on speaker, YouTube videos, etc., but when I make a phone call, the volume is very very low. When I put it on speaker it is fine though. Any troubleshooting, solutions, help?

Is 2GB of Data going to be enough? (soon to be new iphone user)?

I'm constantly on Facebook and Twitter. I'm not much of a video watcher and I probably wouldn't watch any videos knowing I'm constricted to a data plan anyways. I like game and photo apps but I don't use them 24/7. Will 2 be enough or should I get 4? I'm on Verizon if that matters.

How Good Is the Voice Recorder on an iPhone 4S?

I need a new phone and one thing I use my phone for all of the time is recording lectures at school. Would the voice recorder on the iPhone 4S be high enough quality to do that? And you can record for any length of time on an iPhone 4S, as long as you have memory, yes? I had a phone 2 years ago that could only record for 5 minutes at a time. That wouldn't be an issue with a 4S, correct?

Added (1). I have a first gen Droid Incredible right now and it does make everyone sound like they have a lisp. As long as I can tell what the professors are saying, it will be good enough.

Can AT&T trade a regular SIM card for a micro SIM?

One of my pals decided to buy the new iPhone 5 coming out. I didn't really care until he told me he would sell me his 'old' 4s for only $50. The phone is in near-perfect condition. The only concern I have is about the SIM card.
I have a Samsung Focus windows smartphone with the best data plan available. So could I just go into AT&T with the new Iphone 4s and just ask them for a micro sim in place of my old one? (the iPhone is already with AT&T, so it doesn't need to be unlocked). I've seen videos where you can cut your SIM, but I'm really reluctant to do that. So basically, can they swap out my SIM for a micro? And do I need a data upgrade?