So, I'll be honest here. I ran up the northern beach on IoT, and managed to easily jump up through the cracks in the rocks and got into the area past the first gate. I presumed it was meant to be in-accessible until the gate opened, but there were mobs up there, as well as battle pets. There was one of those invisible quest giver bubbles, and a few random goats as well.
So, is it intended that we get up there before the gates open? or is it just a fault on Blizzards part? I question this because I wouldn't expect them to have killable mobs up there yet, but then again, the gates would probably open ingame, rather than with a server restart.