The new version adds support for Delphi 10.3 to 12 Download is available from the project page on SourceForge.
I have just updated my dzDelphiPaths tool to support Delphi 12.
I just released dzBdsLauncher 1.0.11. The only change is support for detecting .dproj files created by Delphi 12 (these have a ProjectVersion of 20.1).
I just released Delphi Tools Manager 1.0.3 which now supports Delphi 6 to 12 (including all the versions with the odd names in between).
I have updated my Delphi IDE explorer expert to work with Delphi 12.
I have just updated the Delphi Custom Container Pack sources to support Delphi 12. It now compiles and installs. I have not tested it extensively. Discussion about this post in the international Delphi Praxis forum.