You can play it right now by joining the beta. Releasing it before everything is balanced just for the sake of being released seems pretty unnecessary. It's not like its half life episode 3 or something, you can see that progress is being made. The longer it takes, the more balanced content is there.
i can't acces unity from my pc dunno why ,.... however i will buy the game when will be released not now ..hope will be soon i cant wait ,already played free version 1 year