Facing same issue on iMac 2019 (Samsung SSD) migrating form Catalina 10.15.7 with both 11.0 and 11.0.1.
After having waited for hours, the installation progress bar did not even appear.
Decided to hard reboot leading into Catalina coming up ok up to you're login. Right after providing password, the iMac gets stuck in the login process with a frozen screen.
So finally booted into recovery and reinstalled Catalina, which is working fine :-)
None of the suggestions worked for me yet.
Will we have 11.1 soon?
Borr
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