Today SuperPhone.cz claimed that they had obtained the next iPhone 4G / HD screen parts and examined it under a microscope to find out the exact screen resolution. They confirmed that new iPhone 4G / HD features a 960×640 screen resolution and supports an IPS panel. This new screen resolution quadruples the total number of pixels when compared to iPhone 3GS and would make rescaling the apps which you have already purchased an easy task.
These claims certainly seem to be a good proof however, we would still need to wait for the official confirmation on June 7.[Superiphone.cz via Engadget]