Several months ago we ported over the LS3 work to LS4 so we could test and provide feedback. I maintained the updates on both LS4 and LS4 over time.
We have made some changes in our production work so I plan to port all that over again now that you believe LS4 to be stable. This will allow is to run "production" on LS4 watching carefully for any issues.
Thank you for the ongoing work and for fixing those items I reported.

Installed LS 4 in our test branch and it's working just fine, comfort update included so well done all.

Is there any place I can find an overview of the new features? Can see the new survey groups and central participants database, otherwise the updates on Github are useful but a bit too granular. Sorry if I'm missing something obvious.

Thank you for your feedback!

Unfortunately, there is no place where all the features are described (at least not at the moment). We are still improving the new features that have been just introduced - a document will probably be available in a couple of weeks when the new features will be ironed out.

Till then, please test LS 4 and report all the issues/feature requests on bugs.limesurvey.org :)

Thanks for the response! Even a list of eight bullet points would probably be worth sharing if you had them.