Yer dont Apple update everything each year.
The 3GS was released June 19th 2009
The 4G was released June 24th 2010
So I wouldnt be surprised if the 5G is released sometime in June 2011
Thats why i get pissed off when my mum says, well its your Birthday soon, lets see what you get then, by that time the next thing is set to be released.
Although saying that, due to the problems in Japan, there is a posibility of delayed delievery of key components.
Also saying that, whos to say that the next iphone will be the Iphone 5. There was a 3GS, so theres a posibility that it could be the 4GS. Although saying that aswell. Iphone partnered up with verision eariler this year to fix antenna issues with the 4G.
There are rumours of a metal chassis, i personally like the sound of a brushed metal backing. If this is true then it would be an antenna idea.
There are also rumours of a smaller Iphone, the Iphone nano, but personally i dont think this will every appear. It seems to gimiky, too novelty.
Ok enough with the little rumours, lets get on with the top stuff.
One of the most likely things to appear is NFC. Some of you may have seen these cards that you pass near a reader and it reads your information. Sometimes called Contactless Technology, Near Field Comunication has already appeared as modification on some older Nokia's, and apparently it appears in the new Nexus S, but i cant confirm that. Its basically an easier way of paying for things at shops etc, if you google it you'll get better info. Im sure it will be released soon within the Apple area.