Wait what if i have download the game when it was free? Do i get the new updates autumaticly or i will have to pay now..?
Everything that was free is still free! the demo version will be updated with any new feature that affects it, and will remain free.
Ecosystems beyond the first 3 are only accessible in the paid version. If you had donated any amount to the free version, you will have the paid version unlocked. Paid version will go up by 1$ for every new ecosystem I add, but if you already own it you won't have to pay more.