I just built an installer for GExperts for Delphi 12. It uses the DLL from the current source code, compiled with Delphi 12.3 and contains all the bugs I haven’t yet found, so use it at your own risk.
I’m not promising anything, but the Easter weekend might give me some time to actually do a new release. Until then I need to figure out some changes to the configuration dialog as the “IDE” tab is overflowing with check boxes.