Sorry for that.
That is because we found it difficult to add more significant new features if we keep updating itch version once a month.
From version 0.2.x to 0.4.x, we add some experimental features, and spend much time fixing bugs of some temporary or intermediate features.
Stop updating here, we could put our full effort on developing features that trailer demonstrated, and things go well.
And for the second question, it should be not later than end of this year.