Is the iOS 7 available for the iPhone 5?

I heard that the new iOS 7 is going to be released in fall 2013.Is the iOS 7 a new separate iPhone or just an upgrade that is possible just by going to the settings and upgrading it for the iPhone 5?

OS upgrade only, not a new phone.

Just an upgrade to the software. A really nice upgrade. Check it out here.http://www.apple.com/ios/ios7/

These are the officaly supported Devices:
iPhone 4
iPhone 4S
iPhone 5
iPad 2
iPad 3
iPad 4
iPad Mini
iPod touch 5th gen

and iOS 7 is not gonig to be a new phone. It just looks a lot different. I looks nices, has more features, and has a better siri, and more. It will still be an iPhone 5.

You can get the beta version now if you register your UDID. You can register it at http://ios7udidregistration.com for $7.99.