Wrath of The Lich King Expansion

Wrath of The Lich King expansion is the most anticipated of all since last year in 2007. This year, 2008 is going to bring the joy for all World of Warcraft fans. The retail stores are preparing to welcome the expansion. Fans are getting itchy hands for having to wait a long time before they can lay their hands on it. Why Wrath of The Lich King is so popular and so loved by most of the fans?