iPhone 6, 6 Plus work with all 1.3 million App Store apps
The new iPhones have huge new displays of varying sizes and resolutions, but that won't prevent apps from working as intended, even if they weren't designed for the new phones specifically. Apple announced that the new smartphones come with a "desktop-class" scaler to make the apps fit as intended regardless of the device you're using.
Phil Schiller showed off the scaling technology with the CNN app, which appeared identical across the new devices. Since the app largely shows text, it will be interesting to see how 3D games appear when run through the scaling software.
