Same issue with MBP 13' 2020. Going from developers beta 4 to 5. Kernel Panic during reboot after installation. Safe mode seems to work. Downloaded Public Beta 2 via VM in windows machine. I could start the installation within safe mode. But at the same installation step of beta 5, the installation crashed. Seems PB2 = DB5. Hopefully we can install the new beta 6 via safe mode 😞