A new feature in the upcoming WordPress 6.5 is the ability for people that use the block editor, you’ll be able to upload and customize your own fonts. There is still discussion on where to store these fonts. Due to security issues, it can’t be stored outside the uploads directory. So, initially, it looks like they will be stored as part of the core directory of WordPress and possibly using a plugin.

More details are to come, but this is a nice new feature to have for us WordPress developers.