In 0.5 they added raiding, improved visuals (map and inventory) and redone a lot (almost all) of code. So I can understand why it took them four months to do that. But after 0.5... I guess after Sierra left they stopped putting a lot of effort into the game. I don't think they are intentionally scumming people over, I just think they don't really want to work faster, so they decided to have this 3-4 months cycle. And keep making promises, so people who want faster updates would have some hope.
Sierra left somewhere during patch 0.6 and 0.7. Considering that they had to find a new writer and coder the delay wasn't even significant when it's compared to the rest.
BTW a lot of people here seems to misunderstand it, either intentionally or otherwise so it might be good to clarify it: When they said "one of the biggest update yet" they didn't mean number of H scenes. Very likely this update will only have 2-4 scenes at most, because a lot of other things had to be drawn. Human towns, human npcs, human sprites, minotaurs, tentacles and probably a lot of dialogue in the new areas. There have been at least 50 pages worth of "still only orcs?" post here and this kind of investment is unavoidable if they want to move to other races too.
"They don't talk about the complaints." No, but they address them with action. Read back the most common complaints regarding the content in this thread:
"Only orcs", 0.9 aims at enabling humans and possibly minotaurs.
"Too many girls, only Sabia and maybe Neve is good", check the scenes in 0.7 and 0.8. Neve had a solo scene and she shared 1 scene with Sabia, every other was Sabia, nobody else.
"Need more sub", only one real dom scene has been added in the last two patches.
"Need more scenes", yes, but as i mentioned, it seems people want variety and not just orcs, so they had to make the assets first.
"Too many side quests and distractions", along with the last one, they directly addressed it in the last part. They want to focus on scenes and Sabia as soon as possible.
Of curse, these are just promises at this point and they still need to deliver on them, but what else do you guys want? Patch 0.10 before 0.9? There are still plenty of things to criticize, like the update speed, planning and communication for example, but scamming and ignoring feedback just does not hold up if you look at the results too.