The World of Warcraft: Annual 2015 is an official Warcraft book covering lore events, locations, characters, cities, legendary weapons, and pet battles that have made up the game since it's release. It contains stunning artworks, crosswords, match-ups, quizzes, comics, and word puzzle. Comics Gnome vs Goblin and Warcraft Saga are also included.
It includes a full description of events in Warcraft history leading up to the Warlords of Draenor expansion.
On page 54 there is a sentence which says that since the death of Archimonde until the joining the Forsaken into the Horde passed 10 years. Micky Neilson acknowledged that it can be an error since previous sources put this for 4 years.