My game is landscape only and on both the iPad and iPhone, when I launch the game, the launch image is stretched like it's being fit into portrait mode. This only last for about 1/2 second, then it displays correctly for the rest of the time. I can't figure out how to get it to display correctly from the start. It's only a 1/2 second and then it fixes itself, so it's not a massive issue, it just looks unprofessional.
Having the device locked (or unlocked) to landscape doesn't change the behavior.
I have this Info.plist key set: UIInterfaceOrientationLandscapeRight
I have the following images and they are all in landscape (wider than tall)
Default-568h@2x.png
Default-667h@2x.png
Default-736h@3x.png
Default-Landscape@2x~ipad.png
Default-Landscape~ipad.png
I'm not (and can't, without a lot of work) use Storyboards.