Simulator builds with the hosted builder (Tools - Build Server - Build Simulator Release App).
The simulator requires a Mac computer. With this improvement, developers using the hosted builder can make a simulator build, download it and then run it on an online service such as https://appetize.io/ or on any accessible Mac.
Bug fixes and other minor improvements.
Developers who are eligible for a free upgrade will receive an email with installation instructions. Other developers will receive an email with a renewal offer.
Update: v5.81 was released. It is available from the same link as before. It fixes the issues related to the search feature.