Updated from 11.4 Public Beta 1, on my Intel macmini 2018.
The update took about 35 minutes and went succesful.
Several times during the install, my screen went black.
Although i know this is normal, it gave me the shivers.
But at the end of the install, you will see a progress bar and the text "x minutes remaining"
Then, after the progress bar is full, your mac should startup succesfully.
All my audiosoftware still works, even Protools opens OK.
The update took about 35 minutes and went succesful.
Several times during the install, my screen went black.
Although i know this is normal, it gave me the shivers.
But at the end of the install, you will see a progress bar and the text "x minutes remaining"
Then, after the progress bar is full, your mac should startup succesfully.
All my audiosoftware still works, even Protools opens OK.