I feel your pain bro. I also bought the collector's edition and have no idea when it's going to arrive... fortunately for me though, I already bought the Steam version TWICE (for two different accounts) before buying the collector's edition. So I have two copies ready to go at launch and a third one maybe a month or so later whenever the physical one arrives. Still looking for who to give that 3rd Steam code to though.
GMAddon1: Adds almost every single monster and NPC from the main campaign into GM mode, plus a few large custom maps to use in GM mode.