The iPhone 4S has an improved chip set with the core processor twice as fast as the iPhone4 and a dual core graphics processor that is reportedly seven times faster the the 4. It sports an improved 8Mp camera fully capable of 1080p video recording. As for operating systems it will run the all new iOS5 and will be the first device to include 'Siri' an electronic personnel assistant, making most apps now voice controlled. The big change for me is the availability of a top of the range model that boast a 64GB hard drive (finally.) I have been waiting patiently since the first iPhone for a decent sized hard disk and this is the first time they even come close. Why they thought people who filled their 40GB iPods would switch to 4GB iPhones, with all the extra content that the iPhones had, was beyond your humble reviewer. As was the fact that many people did.
The Nano is largely un-improved. It has not had a size increase (hardly surprising with its physical dimensions.) the main difference being an improved os that includes a whole new "Clock Face" function that compliments the trend for wearing nanos as watches. Like the nano the touch just gets a software upgrade, but the plus side this upgrade is to iOS5 which will give the touch much the same functionality as the iPhone4S (without the 3G.)
You can buy the iPod Nano and iPhone 4 on spree4. iPhone4s coming soon.
