If you mean a publicly available one, then no, there isn't one currently.
To be honest I'm not sure if at this point in time even Larian knows for sure what they are going to include by the end of development.
I'm pretty sure that they don't. Oh, I'm sure they have goals, and ideas... but plans don't usually survive contact with the enemy unscathed. In this case, the enemy is time and resources. They do not want to promise something and then walk it back later if something goes wrong.
No roadmap or timeline is incoming, see this video at 49:15:
https://www.twitch.tv/videos/763351879
