I'm trying to get the next version ready before Christmas. It's going to be called 'Fifth Anniversary Christmas version' even in the case that I'm not going to get it ready in time. It'll most likely in a middle of summer when it's released.
I've already browsed through the source code here and there to find something to fix. It's mostly content - those new level themes I have been talking about. But it can be a lot more if the story is changed. Not to mention the gameplay system itself.
Wish I can finish it this time, because I've abandoned this project many times since the initial releases.