Well, v0.8 is the current public version and soon (June 6th) v0.9 will go public. I plan to release v1.0 around June 15-16th for patrons and this will be the last update story-wise.
Yorna will get content updates before I will be ready to switch to the second game. I’ll post more info about this later, after v1.0 release.
As for the completion ratio, Ada makes comments like this if you already did all the available parts of the main story in the current update, that’s all. It helps players to understand if they ”beat” the new version or these’s something they’ve missed.