Will the new iOS affect just the iPhone 5?

I have the iPhone 4S and I was just wondering if my phone will be able to switch over to the new iOS.

I think it be installed on 4s and up models

Actually it's for iPhone 4 and up. IPad 2 and up.

Its no way

It will work on iPhone 4, 4S, and 5.

I'm currently running the beta on my iPhone 4S and it runs very smooth. I will be upgrading to the next iPhone as soon as that comes out, but I wouldn't complain if I had to stay with the 4S.