found this update from 1 month ago:
https://euro-stack.com/blog/2025/3/schleswig-holstein-open-source-digital-sovereignty
what the actual amount of progress is seems to be buried under bureaucracy-speak but I got 3 useful sentences out of it so far:
Configuration via group policies
MS Office can remain installed in parallel, until October 2025
Goals for october 2025: LibreOffice should be the sole standard office software on around 70% of the state administration's IT workstations
so to me it seems they're currently slowly doing a MS office -> LibreOffice transfer, but they're still all using windows (as the use of "group policy" implies)
rebugging, if you will