Signed into Windows Insider using the fast ring and downloaded and installed Preview Build v18312. This was not installed on my main machine but was installed on my "do what I want to with" machine. The only real problem I had with the install, it did not install
drivers for the Universal Host Controllers, so no USB ports. The work around was to use a PS2 keyboard and mouse, that I happened to have, to access Device Manager and to uninstall the updated UHC driver, I had installed, and then manually install the Windows UHC drivers. This would not have happened if I had did a clean install. Everything is working well now.

This is the "This PC" property screenshot.

This is the "Disk Management" screenshot. If I had did a clean install Windows would have put a boot partition in front of C Drive, I do not like that and will not allow that on my PC. Since I will not be doing a System image of this Preview, then I will keep the Recovery Partition.
Looking forward for the next Preview Build.

Got v18312 in dual boot with LM Sylvia 18.3. I have ran a lot of different Linux Distros but Mint on a SSD really does well, and it is very easy to set up. One more way to run W10.