KiCad 6 project templates for various fabs.
These are my best guesses at correct specifications for various fabs/PCB services, based on their documentation. Improvements welcome if there are any issues!
To use these, either change KiCad's user templates directory to the root directory of your checkout, or copy these into KiCad's template directory.
If you are using macOS or Linux, you can symlink your template directory to point to your checkout.
From KiCad's main window, you can choose File > New Project From Template..., then choose the template you'd like to start from.