Frankly, most of the comments here are really out of line. I'm also waiting for the next update, but it doesn't matter if it comes in five years, as long as it's done with quality. And so far, the game has always been super well-made and well-maintained.
No one should "demand" an update. The game doesn't belong to you, and you're only putting a lot of pressure and maybe even stress on the team. They're human, give them time.