I feel like I've seen this very headline before in Germany specifically several times over the years, like I keep hearing that Germany is using LibreOffice/OpenOffice.
Googling to try to confirm this, I see that OpenOffice began when a program called StarOffice was open-sourced, and StarOffice was originally a German product most popular in Germany, so that could be part of German interest in OpenOffice descendents specifically. https://en.wikipedia.org/wiki/OpenOffice.org#History
And here's an article that may be what I was thinking of -- but turns out it was about Munich specifically. That has a history of saying it was going to switch to OpenOffice as far back as 2003, that not working out for them, then trying again...
2020: Linux not Windows: Why Munich is shifting back from Microsoft to open source – again: Munich's flip-flop back to open source is the latest sign of Germany's political sea change over proprietary software.
> However, the decision by the new coalition administration in Germany's third largest and one of its wealthiest cities is just the latest twist in a saga that began over 15 years ago in 2003, spurred by Microsoft's plans to end support for Windows NT 4.0.
> Because the city needed to find a replacement for aging Microsoft Windows workstations, Munich eventually began the move away from proprietary software at the end of 2006.
— https://www.zdnet.com/article/linux-not-windows-why-munich-i...
And here's a history of Berlin announcing/trying but not getting approval....
> It is the second time the opposition Greens had proposed switching Berlin's 68,000 workstations to open source software, and the second time they failed, said Thomas Birk, the party's spokesman for government modernization, on Wednesday. The earlier effort was in 2007.
Oh boy, which also mentions:
> Not every migration works though. The city of Freiburg announced in November it would dump OpenOffice and go back to Microsoft because of functionality problems due to a failed migration.
— https://www.infoworld.com/article/2611066/berlin-won-t-migra...
So yeah, German localities kind of have a history of trying this out without it actually leading to a sea change, although this one may be larger/at the state level instead of just city/etc. (Although I guess it's wrong to say this hasn't led to a trend -- its' an existing German trend of local governments trying to switch, without it necessarily working out!)