I've got the 12 month subscription, but can't seem to find 'em yet. Will be asking Support if there are any yet. Guessing our first early access zones will be Mythology World, whenever that's ready.
EDIT: There are no extra areas yet. Asked support.
No problem!
It's pretty good, yeah! Been playing since last year, really enjoying it so far! The Hub is interesting, especially the old version of the minigame platform.