Hi,
i wonder how to release your game in different language. Do you must upload different builds to Apple for that? Or do you must upload different Text-files with your content?
None of the above; include the different languages internally in your game. Realmaze3D is in English, Spanish, French, and Italian. It reads the language on the device and uses that if it’s one of the supported languages (otherwise English is the default), though you can override this in the preferences. To get the different languages to show up in the app store description, you have to mark the main file as localized with each of the languages. You don’t actually have to do the localization in XCode, just set it up so the languages are recognized.
–Eric
As far as I know, you need to upload different binaries of your app.
But what you can do is to create one app and inside the app create an option to select different languages.
Hope it helps 
No, you don’t. Read my post again.
–Eric
Yeah, posted it right after you replied 
now I know, thanks! 
Hi, how can you detect what language the device is set to ?
I think there is no specific command for that in Unity…
Thats a job for a few lines of objc code in xcode
or take a look on the enhancement pack thread - it offers prefered language detection