The world and the door
Two things landed this week.
The world is authored in the editor
The dev island is now a level in the editor, and the level is the truth. Move a tree, save, bake, and the server enforces the new ground. The same door serves the real world: two paintings, a heightmap and a biome map, become a continent once, and from then on it is sculpted and dressed by hand.
Accounts get a door of their own
Registration is by invitation. An invite code, an email, and a password make an account; the email is confirmed before the game lets anyone in. The service that owns this never shares a process with the game.