Today I have begun to test the newest Windows 10 20H1 Preview release of Windows 10.
The first error I found was when I was creating the bootable USB from the ISO I downloaded from Microsoft. I used the recommended settings on Rufus and created a Partition scheme as GPT and a Target system UEFI. When I tried to boot onto my 8-year-old test laptop is would not boot legacy I had to make some changes. I had to recreate my bootable USB to Partition scheme (MBR) and the Target system (BIOS). Once these changes were made the OS installed fine on my test system.
I installed Windows 10 Pro and was impressed that the Start Menu was not cluttered with all of the junk any longer. In business, it takes us hours cleaning up all of the un-needed icons on the start menu. This will be a big-time saver.
I did join the new release to the Domain and found it connected as normal and I had no issues pushing Group Policies to the new test machine. I will make notes as I continue to test the new Windows Release and see what new features I can find for you. I would suggest that you sign up for the FREE preview and begin testing the new releases also.