When ARR releases, how much of the map will actually be avaiable come retail release?

In 1.0 we couldn't access Dravania, Ala Mhigo, Pagith'an or Xelphatoi. The latter two being the Xoili and Lizard guys (can never remember their names) homelands I realize. I know the maps have been completely redone and seperated and all, which is nice, I'm just curious to, as far as exploration goes, how much further we'll be able to go right away or will we need to wait for later patch updates to unlock those places?

Just idle curiousity really.