TLDR; What did I actually buy and what is the content I can expect to get? Maybe add some information on store page to clear up any questions?

Shouldn't this be labeled as early access? The amount of content present is not much, only handful of levels, and it is implied more will come, so the game is not complete (yet).

But I did not notice any information about current state of the game, no mention of any chapters. Is there some kind of roadmap of what is promised or is the current content defined as full and rest is only "added" bonus that you wish to make, but without actual obligation to do so? I like the game, but this feels like deliberate omission of fact and it doesnt make you look good... some roadmap of what is more promised would be much apreciated.