Not just in 5.2 if you recall Cataclysm.
I haven't seen everything of the new content in 5.2, however so far I've seen a lot of portals that lead me to believe that getting to the Isle of Thunder and Isle of Giants will be done via portals, and to get to the entrance of the Raid will also be done by portals.
Now I may be wrong and have seen some really early content that didnt have the real forms of transportation active yet, but this seems like a terrible idea waiting to happen.
Am I the only person who really hates linking zones together using portals? It feels so damn lazy...