We are intending to release the next version of Zen Cart, which we are calling 2.0.0, in the fall of 2023. Edit: Spring 2024 (maybe March)

The version number reflects the adoption of semantic versioning by Zen Cart. You can read more here:
https://docs.zen-cart.com/user/about_us/versioning/

You can follow more details about what's going on with the next version of Zen Cart in the Discussions area of Github:

https://github.com/zencart/zencart/discussions/5892