Like everyone, before the game launched I read the description of the phases. I figured that the game would just be in a 1.12 state minus the things that Blizzard explained in their outline.
After getting to 50, I discovered that there were some other things missing that I saw no announcements anywhere about.
The level 50 class quests (for Sunken Temple) aren't in. And a host of quest givers are not present in Light's Hope Chapel, most notably the turn-in items (Bone Fragments, Dark Iron Scraps) do not drop in the world.
Does anyone know of a post that explains all the actual changes? For example, I'm curious to know whether the Silithus quest for Deathclasp is available.
I've been surprised by 2 things already, I'd like to read up before I make a plan for something else before realizing it isn't there.