It seems that it would be easier for one person at apple to upgrade php, rather then millions of users having to do so. Laziness.

Same problem/question

Additional: The release notes mention there were 2 Beta 5 downloads. A "big"one and a "smaller" one. Oh-crap. I erased my disk and re-installed. Still having the Safari crash at launch, nfs now works, and I'm downloading the beta 5 Xcode again.

Similar here. I found that an NFS read request will immediately cause a kernel panic and reboot. I re-installed beta 5 and now in addition Safari crashes at launch. Safari Technology Preview and Chrome do however still work. Additionally Xcode crashes when you display Devices and Simulators.

Same experience. And you can't downgrade to the released version. Use Safari Technology Preview to avoid the problem. https://developer.apple.com/safari/technology-preview/

The Canon EOS utility 3 hangs on macOS 11.0 Beta 1 and Beta 2