The Apple iPhone 4 is out today on Thursday June 24 2010.
I think the Retina Display is one of the coolest things on the new iPhone 4. Its has a resolution of 960 by 640 PX. 326 Pixels per Inch which is more then the human eye can see, It can’t even distinguish each individual pixels.
FaceTime is video calling for the iPhone 4. You can only call other iPhone 4’s and it works over Wifi only.