In case you feel adventurous (and have a spare machine to wreck):
I hope anyone who would consider installing a developer beta already knows this, but just in case …
Scrivener is not supported for use with any beta version of any operating system. Make sure you have good backups and understand that any such use is entirely at your own risk.
In the event that you find incompatibilities, we appreciate being told about them, and generally attempt to fix them in time for the operating system’s official (non-beta) release.