Isla Sorna update is out (on Android at least) (thanks for the heads-up @Ned) and looks pretty amazing! You will get a little story lead-in when opening the update, and then it will take you to the island. First three expansions for coins available immediately. Icon on the screen is used for easy switching between the islands, when you have assets selected, just tap it and it will move it to the other location. Nicely done!
The island also looks like it has a HUGE amount of additional space, so I’ll be curious to see how much of it we actually will be able to expand into. With only 5 additional levels though, my expectation is that past those 5, you will have to pay DBs to expand further. Probably goes without saying, but was able to drop 4 paddocks that were in storage onto the island so it definitely allows for more creatures to be out in your park.