Today the editorial board of _Mathematical Logic Quarterly_ (pub'd by #Wiley) resigned and launched a new #DiamondOA journal on the same topics.
https://open-access.network/services/news/artikel/ruecktritt-des-mlq-editorial-teams
See the open letter announcing their resignations and plans for the new journal.
https://zml.international/files/zml-open-letter.pdf
The new journal has a German title but will publish in English, _Zeitschrift für Mathematische Logik und Grundlagen der Mathematik_.
https://zml.international/
I track these journal "declarations of independence" in the #OpenAccessDirectory (#OAD), and just added an entry for this one, at the bottom in chronological order.
https://oad.simmons.edu/oadwiki/Journal_declarations_of_independence#2025
I also track them — and discussions of them — in the Open Access Tracking Project (#OATP, @oatp).
http://tagteam.harvard.edu/hubs/oatp/tag/oa.declarations_of_independence