Since it was not offered through W.U. yet, I just made the ISO using MediaCreationTool20H2.exe and updated 6 different machines to Version 20H2 Build 19042.572.
No problems found so far except for one that I already had with 19041.572.
There is still a problem ejecting external drives either external SATA or USB, caused by windows defender MsMpEng.exe.
I don't understand why windows defender does not release the external drives when they need to be ejected.
For now, as a workaround, I had to add the external drives to the exclusion list to avoid the ejection block. In my case the external drive has the letter E:, this can vary in different machines or if there is more than one external drive.