Hey,
I consider Pixel Dungeon a finished game and I'm not planning to add any new content or features to it. I still update it occasionally, because the game is pretty old and I need to make changes just to keep it working on newer systems, but that's it. I'm definitely going to create Pixel Dungeon 2 or something like that someday, the only question is whether it will be my next next or it will happen in ten years...