Hi there,
Ayk, addons are now enabled in the Beta but 90% of the most popular ones don't work at all (as usual). - Details!, Bartender, Plexus, Shadowed Unit Frames, Bagnon, CTmod, MoveAnything, etc, etc, are all broken.
In the past WoW Betas there were always some LUA coder / addon authors who voluntarily made fast hotfixes for the most common addons and share various addon packs here on OC or on their own GitHub repositories to use in the beta but I didn't find anything so far.
I know the Beta state just got in but could you share if you heard about anyone who's quick-patching some addons for the Beta, please. Thank you.