http://kotaku.com/gaming/whats-in-a-name%3F/is-world-of-warcraft-wrath-of-the-lich-king-the-new-expansion-284582.php

Copy and Paste:

German ratings board USK—which you may know better as the Unterhaltungssoftware Selbstkontrolle—has revealed the name of one of Blizzard's upcoming releases, World Of Warcraft: Wrath of the Lich King. The title was rated with the descriptor that it would be the "Add On" was a "GC-demo" meaning that the game will be on hand, most likely playable, at Games Convention in Leipzig, Germany.

The expansion has been rumored to explore the frozen continent of Northrend for some time, with leaked documents lending more weight to that speculation appearing earlier this week.

Blizzard staffers revealed late last year that the company planned to ship yearly expansions following the release of The Burning Crusade, so it's just about due for another dip into players' wallets.

Just remember to call your mothers before you purchase this one, kids. She'll miss you.

 Any WoW players out there?

Not exactly a rumor, it's been confirmed at their BlizzCon event just today now.

http://kotaku.com/gaming/blizzcon-07/blizzcon-opening-ceremony-liveblog-285833.php

yeah I just noticed that =). Sorry if this was already talked about, I did look but not super hard.

edit: And might I add I'm not too pleased that they are apparently raising the lvl cap again.  After playing everquest for years, I can tell you that increasing the level cap wreaks havoc on the low end game...oh well.