Since update to Xcode 6.1 yesterday there is no correct localization of apps in the iOS Simulator. I switched the language and region to German/Germany and my apps are still in English and only English keyboard is available. Localization was fine in Xcode 6.0.1 and iOS 8.0 Simulator.
Does anybody have similar problems?
One possible work around is to set the "Application Language" in the used scheme.
Source: Answer of Yoshihiro Sakamoto in Apple Dev Forum
This was mentioned in the Xcode 6.1 Release Notes
I just do by above answer AlexVoge. Beginner maybe need a picture :]