I´ve installed 3.7-beta1-25639 to my XAMPP localhost. Before install over browser I´ve definded the language in wp-config.php
But the backend is still in english. Only in /wp-content/languages/themes/ there are the two files for TwentyTwelve stored. I was confused to see, that this are the files for German -> formal instead of German -> default.
As Validator for Germany I´ve imported today all strings to the dev-branch on translate.wordpress.org. Thus there are all strings available.
Could you please explain, how the strings imported into the wordpress installation and how it can be filtered if informal or formal strings be used?