Will Design Blocks be supported by the Package and Content Manager in V9?

I’ve recently been testing my library https://github.com/CDFER/JLCPCB-Kicad-Library with 9.0.0-RC2 and it is running great so far. But looking through the source code and I can’t find any refrence to Schematic Blocks being able to be installed via the package manager, am I missing something or is it planed for the future?