Sweet Jesus There's a New World of Warcraft Expansion Pack!

I've been out of the gaming loop for a while now because none of my friends or family are playing anymore. And also, I got tired of grinding. But, it is almost the winter, and there's a new expansion pack out - Wrath of the Lich King. It looks so pretty and my hibernating urges are about to get stronger as the weather gets colder. My only hesitation is that I have to double-check the game specs against my computer. I am extra excited for another continent too! None of my characters are high enough to even become a Death Knight. In fact, I have no idea which characters I have now. I think I have a Blood Elf hunter, a Night Elf druid, a Human priest, and a Dwarf rogue.