Now this is some other thing. I have not seen anything like that in the upgrade description.
Let me explain where the problem lies:
The description mentions rather cosmetic functions like camera jumps and improved framerates which are expected to be released for free.
Have you looked at the progress Il2 Sturmovik: Cliffs of Dover made? Not a penny charged for anything, and they even released another campaign for free.
A developer that puts work and effort into a game mostly to please his playerbase is something rarely seen nowadays. Taking one for the team and releasing a big upgrade for free, mentioning the work it has cost you gives you the look of one of these developers that is known to really satisfy his customers.
Also, one more thing:
All this fandom going on is damaging your reputation outside this forum, and it is that one thing where no developer is intervening.
That being said, I am pleased that somebody responded in a polite way, having facts to back up his claims.