Give up, mate. Too many devs sell hype and deliver nothing. To avoid disappointment, expect nothing from nobody. If update comes out, nice. If it doesn't, who cares? Games, porn-games in particular, should stay what they are : an entertainment.
I used to complain on hundreds of threads a few years back because of fake promises, until I snapped one day and said " F$$$ It ". Just enjoy the moment with what we've got on our hands and move on. Even the most serious Devs I used to white knight in the past became unreliable.
Still, I can't blame lost of motivation or burnout. Those can hit anyone and in any domain at any time. Fake promises and bad planning are another thing.