Apologies, I know this question comes nearly 3 months after you posted this, but I was wondering if there was any more info you could give us on this? Might be a dumb question, but is it as the name implies a privately instanced island or something to be integrated for purchase with the planned 1.13 worlds? Also things like would you be able to store items & chests on it? As someone who loves living & building on islands, it certainly grabbed my attention!
It's in theory still possible but was largely put in development hell because of uncertainty about the needs of survival. It was subsequently never brought up during one of the meetings with survivalists, so it was deemed "not a high priority to the players"
Thats right u take them lemons and shove em back up lifes ass. change is always important. Won't play massive but i wanna see you all succeed so badly ahhaha. peace.