are there any mechanisms for querying the new system extensions in Catalina+ in oquery? is this being worked on at all?

There have been conversations during the Osquery monthly meetings and some in #core. However, I can’t find the discussion but someone is looking into it

Not yet https://osquery.slack.com/archives/C08VA8R6F/p1598294034011200

I have a PR adding system extension table on macOS. It will great if you could provide feedback. https://github.com/osquery/osquery/pull/6863