Localization native development region, base localization and Appstore language (bundle)

Question

I do understand that \"Localization native development region\" is a fallback for languages that are missing in the project.

I do understand that the language sh

Answer 1

This a trick more than an answer, a real solution is really hard to find if you want to keep the Base localization.
Right after the creation of a new project, open the xcodeproj file manually in a text editor. After few line you'll find something like that:

developmentRegion = English;
            hasScannedForEncodings = 0;
            knownRegions = (
                en,
                Base,
            );

By changing manually developmentRegion and the reference in knownRegions, is possible to obtain in the info tab under xcode 6 a localization like yourlanguage-Development language.
I've filed a radar (n° 19438250) to Apple asking a dropdown menu' to chose the development language of the project or clarify that problem.