So, today the third patch for Beta 4 is being posted.
Download page is the same as usual. If you would like to download only the changes since an early version of Beta 4, use the Patch 3 download. If you’re new and downloading for the first time, the main download now includes the patch so no need to worry about that.
You can check the changelog for the full details, but most things are bugfixes, alongside a couple other minor details. Have fun!