The Dev has never said anything about Future updates as far as purchases and payments, unless you are talking about one of the monthly subscription sites.
Viewing post in Personal Assistant Ch.3 (Version 0.8) comments
You replied to Circuitarity's comment who asked about eligibility for updates as they are released and you said "as is always the case" so I really don't understand why you're saying that you never said anything about it.
But fine, do your thing, but I won't purchase a game for $10 everytime a new version comes out.
Thanks for the answer tho
Allow me to point out a few things:
A) purchasing Chapter 1 gets you 1 update (Chapter 2 obviously).
B) Chapter 1 and Chapter 3 are the same series but really count and act as 2 separate games which happen to use the same universe and rules (with the option of not Playing the 1st 2 chapters and just answering some questions to play chapter 3).
C) $10 once every 6 months is a very cheap price (Oh no $1.66 a month) for some good new content and story.
D) Somewhere on or connected to this page is a link where you can get the free version a month or 2 later.