This is what SP said in their latest update. I am sure they are working on something good. I am not sure if this means more islands, although I suspect not. If I had to venture a guess, I would say that habitats will be up-gradable past level 8.
Although another option that would seem most fitting with the monster lab is to be able to store whole monsters in the monster lab vault. Hey its all got to be some form of cryogenic storage anyhow.
What do people think?