That's not how version numbers work, unfortunately. After 0.9 comes 0.10, then 0.11, and so on. OIALT's case was only a coincidence. Scroll down a bit, Caribdis said 7 days ago that there will be more than 10 major updates in total so it's prbly gonna take longer than your estimate, unless the project gains additional contributors.
A lot of people enjoy the game in an episodic way, each update is a new episode. Saves should be transferrable to newer versions, in the PC editions at least. I think I might enjoy it even more this way since I feel like I devoured OIALT a tad too fast. But not everyone likes the wait that's part of the experience, I get that. 💀