This is probably the only thing you are seeing right now. The login servers are overpowered by the sheer number of players trying to experience the new content, but I imagine the initial rush will pass soon enough. In the meantime, you can check out the list of quests you will be facing if you decide to start a new Worgen or Goblin character.
Worgen starting quest lists
Gilneas (Page 1) |
Gilneas (Page 2) |
Gilneas City
Goblin starting quest lists
The Lost Isles (Page 1) |
The Lost Isles (Page 2) |
Kezan