I liked so much the artstyle in this game and the older sister route, makes me sad that the game is not being updated, but anyways we got other games to play, still waiting the update of Being a DikGive 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.