After installing Growl 1.1.2, doing Get Info on the PreferencePane (/Library/PreferencePanes/Growl.prefPane) shows it is version 1.1.1. The About tab in Growl reports version 1.1.2.
Growl version history says:
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Update German translation
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Hm. I got this. The menu an some GUI strings still in English.
I don't know that any of our localizations are entirely complete yet but additional improvements for German were made in 1.1.2. Our goal is to have all localizations updated in the next release, but this depends on many different factors.