Images.xcassets Launch Sizes for iOS8? Retina HD5.5, Retina HD 4.7 and Retina 4

From the iOS Human Interface Guidelines :

For iPhone 6:

750 x 1334 (@ 2x) for portrait

1334 x 750 (@ 2x) for landscape

For iPhone 6 Plus:

1242 x 2208 (@ 3x) for portrait

2208 x 1242 (@ 3x) for landscape

Retina 4 is the same R4 resource in previous versions of Xcode to support 2x2 graphics on a 4-inch screen

640 x 1136 for a portrait (for example, by default - at 568h@2x.png )

All images at 72 dpi