Okay thanks a lot, I had no idea there was this split / partial content situation. I guess I'll have to waitSee: 80,595 #5 in "General FAQ"
Which version are you asking if you should play? v0.20.16 - no because saves are not compatible to v21.0.0 due to nearly all new code and variables. v21.0.0-wip.5003? If you want to - it's only got partial content compared to v0.20.16, but as time goes on, it will catch up (and they are adding little scenes here and there that are not in v0.20.16)
Or you can wait until the tech update is finished - whenever that will be with their roughly bi-monthly updates.