I released a slew of updates the other day including an update to Catalina 10.15.5 Beta 5. I have installed it and been working with it for a while and it seems to work very nicely. This new Beta does seem to fix some crashing problems that were incurred with 10.15.4. It does not fix my Finder not booting issues, but that might just be a problem with my setup. Since we are so close to the Apple Developer Conference I am wondering if this will be the final version of Catalina. I guess we will know soon enough.