Having said that, do you think that Skype will be the primary voice communication app of choice on the mentioned iOS-powered devices? Hopefully the XSS vulnerability in iOS apps will be fixed by then.
Apart from a redesign in the iPhone app’s interface as well as throwing in image stabilization for video, you need to take note that Bluetooth connectivity is only supported on select models – and they are the iPhone 4, iPhone 3GS, the fourth generation iPod touch and the iPad 2. Anything older than that is just not going to work.