On a super positive note. An older interview saying that you can cross the entire world without ever hitting a loading screen! I would guess that means no loading screens between regions either, especially considering that its an older video. Wouldn't think they would downgrade as time goes on.
http://gw2.onlinewelten.com/articles...interview.html
EDIT. Nevermind, found link through a GW2guru post and it seems that the person that posted added onto the quote about loading screens...