I had a good week working on a variety of different things.
The Windows Installer is now Qt6. You do not have to do anything special to update, just do your normal routine. If you are a Windows 7 user, it is very likely you will not be able to run it. You can use the Qt5 extract release for another week or two, but please plan to either stop updating hydrus, move to a newer OS, or consider running hydrus from source.