This version leaves off on a cliffhanger between the MC and his sister, as well as how multiple paths still aren't finished yet (especially with the son if you made him your enemy, to where he's going to extremes to get you kicked out of the house).
lol spoilers, as i hadn't played yet
but i get your point, well explained
i think it depends on the dev and the game
if at 0.9, its close to completion, they release a 1.0 and call it complete
if not, they turn it into a 0.10 and continue the development