With the new relase of MacOS 11.0.1 Big Sur, the follwing 4D builds are recommended below:

18.3 build 257973 or newer
Obtain the latest 18.x nightly build here


18 R5 (beta)
18 R5 is currently in beta, but fixes for blocking issues have already been addressed and can be downloaded here (partner only).

We currently do not recommend running any version of v17 on Big Sur, but will provide more information in the future. For now, stick with 18.3 (257973 or newer) or 18 R5 beta.