The recently released Patch 17 of BigFix 9.5 introduces Agent support for Mac OS 11 (Big Sur) x86-64.
The operating system string reported by the BigFix Agent 9.5.17 will look like this:
Q: operating system
A: macOS 11.0.1 (20B29)
On a related note, after upgrading a Mac system to Mac OS 11 (Big Sur) the installed BigFix Agent may temporary report the operating system as “Mac OS X 10.16 (20B29)”. That would be due to the Mac system running the unsupported 10.14 package of the BigFix Agent 9.5.17 instead of the 11.0 package, which is the one that officially supports Mac OS 11 (Big Sur).
In such a case, you may take advantage of the following BES Support fixlet (ID = 4846) to replace the 10.14 package of the BigFix Agent 9.5.17 with the 11.0 one on all Mac OS 11 systems and thus move them to the supported case:
WARNING: BigFix Client Version 9.5.17 needs a package update on Mac OS 11
Update of 01-22-2021:
BigFix 10 introduces Agent support for Mac OS 11 (Big Sur) x86-64 starting from Patch 2.
Everything specified above about 9.5.17 is also valid for 10.0.2.