Most u-he plugins (with the exception of Uhbik AU) are generally working fine on Big Sur.
Yet, since not all major DAW hosts are officially compatible yet, we cannot say for sure if they are working everywhere. We will continue testing as soon as hosts are declared compatible.
Here is what we know so far:
* Uhbik is not working in Logic, MainStage and GarageBand
* some plugins will still display transparent dialogs when used in Logic (or Cubase in dark mode)
* AU versions will not display parameter feedback if controlled via MIDI CC (MIDI CC control is still working, though)
* AU versions: writing automation by moving GUI parameters won't work (please draw the automation curves)
* Ableton Live, AU version only: parameters added to the device panel will have no effect on the plugin (please use the VST2 or VST3 version instead)
Zebra2 2.9.2 does not exhibit the above mentioned issues, and should be working just fine.
A note about Uhbik:
If you are using any of Apple's own DAWs, be it Logic, MainStage or GarageBand, the Uhbik plugins won't load anymore.
It is still recognized by the host, but trying to load it will result in an error message.
If you are using one of these hosts and rely on Uhbik for your projects, then we strongly advise you to not upgrade to Big Sur just yet.
We are also working on native support for Apple's new Silicon chips.
Porting all plugins will take some time, though.
Thus we cannot give a reliable estimate for the availability of Silicon compatibility updates, but expect to see betas in the coming weeks and months.
Old, original post:
Hi everyone,
as you might have heard, Apple just released the first public beta of the next major macOS version, Big Sur.
The good news: Our VST2 and VST3 versions seem to be working just fine.

The not so good news: Big Sur will not recognize our AU plugins anymore.

This means, the AU plugins cannot be validated by the system, and thus won't appear in hosts like Logic X, GarageBand, MainStage, or any other host which supports the AU format.
We have already started working on updates to bring the AU version back to life in Big Sur.
Those updates will be made available as soon as possible, but we currently cannot give an estimate for the release date.
The availability of Big Sur compatibility updates will be announced through the usual channels, like our newsletter, and posts on Facebook, KVR, ...
Until then, please do not update to Big Sur, if you rely on u-he AU plugins.
Cheers,
Tas