Currently, the iPhone 6, iPhone 6 Plus, iPad Air, Macbook Pro with Retina Display 15", and iMac with Retina 5K Display are available for download at native resolution. These wallpapers should still work on lower resolution device i.e. iPhone 6 wallpaper will look fine on an iPhone 5S.
iPhone 6 & iPhone 6 Plus
iPad
MacBook Pro
iMac
