https://www.everquest.com/news/call-of-the-forsaken-in-game-rewardsQuote:
In addition to everything else that Call of the Forsaken offers players, don’t miss these in-game rewards that players receive just for purchasing the expansion!
Before we show off each item, here’s a list of what players will get:
Only Available from Pre-Order of either Standard or Collector’s Edition
Vestments of the Forsaken (Mercenary Chest Armor)
Standard Edition
Tirun House Pet or Familiar
Gargoyle Statue
Painting: Naythox Thex
Painting: Cristanos Thex
Mark of Neriak
Journeyman's Pocketed Rucksack (32 Slot Bag)
Collector’s Edition
All Standard Edition Items plus the following:
Hive of the Bixie
Ethernere Wurm Mount
Contract of the Bixie
Honeycomb Satchel (36 Slot Bag)
(Pictures and descriptions of rewards on Link.)