I am building an app for iOS with Unity 4.5.5f1. App is meant for landscape orientation only (and therefore in build settings set for landscape only). It works fine on iPad mini and iPhones, but on iPad Air 2 (iOS 8) the orientations switches between landscape and portrait all the time.
As always, backup your project before doing stuff like this, it may work, it may not. It was the only patch that seem to address anything screen orientation wise.