... for which you will pay money. Like the iPod touch apps package. However, to clarify, the software update will be delivered via iTunes, not via the iPhone itself.
You bought your phone, you own it. They don't take back your old MacBook Pro when they release a new one, why on earth would they take back your phone? You want a new generation iPhone? You're going to have to palm the old one off on someone else, ditch it, or hang onto it as a spare. Just like your computer.
P.S. Fake. And ugly. And very cheap looking. Screen looks more like plastic than glass, although that could just be the swirling/scratches. Apple is far better than this.