Version 5.8.9 should be the last one in the 5.8 branch, and in the next few days, work will start on the next major 5.9 version, scheduled for the end of April 2020. Version 5.8.9 is a maintenance release with few updates and fixes.
The last few versions fix several bugs in attachments and notification modules and improve few more things. Shared Dev4Press Library is also updated.
Next version 5.9 is scheduled for April 20, 2020. So far, there are many new things planned, most of them from the user requests. This will include improvements for attachments, user profiles, widgets, attachments, and a few more things. If you have any more suggestions, please, let me know in the support forum.