The experimental build of Alpha 21 is due to be released on Monday and so the traditional streamer weekend is in full gear where you can preview it in advance.
Small tip as well: come Monday’s launch you can install it yourself by opening your Steam library, right click the game -> betas tab and selecting it from there.
This game is forever alpha because they keep redoing the basic systems over and over again.
That said, there are new things to check out like new POIs and a water gathering system which seem nice.