Yes, this is planned.
The support for other Page Builder plugins will be done as Add-Ons.
These Add-Ons have already been released:
- Oxygen Builder (first released in April 2019)
So far, I am planning the following Add-Ons:
- Beaver Builder (in development)
- Brizy (in development)
- Thrive Architect (in development)
- Divi (planned)
Please note, it is not possible to give any roadmap or release date. The Add-Ons will be released when they are ready, step by step.