Schleswig-Holstein, one of Germany’s 16 states, on Wednesday confirmed plans to move tens of thousands of systems from Microsoft Windows to Linux. The announcement follows previously established plans to migrate the state government off Microsoft Office in favor of open source LibreOffice.
That was the city of Munich. It was sold as a success in creating freedom and saving millions, but they still went back to Microsoft.
According to the Wikipedia article they changed their mind and decided to stay on LiMux.
I don’t know where you’re getting that. The German article says the city government said they’d keep LiMux, but despite that statement all PCs got Windows instead.