Thank you!
That led me to this thread
and from there to
https://www.youtube.com/watch?v=qkEHDCjp1P0
and then to
https://www.youtube.com/@oakensoul/videos
where the author has released 10 short videos over the last two weeks, explaining stuff.
Since I am not familiar with the addon, it doesn’t mean much to me, but it does seem to explain what the changes mean for GSE and how to use it now.