Would like to know about that too. I just started the game for the first time, 3h in atm, and not sure if my save is going to corrupt when 1.0 arrives. Amazing game btw! Loving it so far!
You should never need to restart for a new version! Saves are completely compatible between different versions of the game, you just need to move the files. Version 1.0.0 will be the official feature-complete launch, but won't have all the illustrations (that will be much later).
