Dungeons And Dragons Online: WotC News: Return to Undermountain Preview

Wizards has a bit of a preview up regarding some of the content they'll be releasing in March:

In March, the Forgotten Realms site returns to Undermountain! Matthew Sernett has buckled on his pen (mightier than the sword) to lead a charge into the biggest dungeon in Faerūn. Matthew, who until recently was editor-in-chief of Dragon Magazine at Paizo Publishing, has returned to the Wizards fold as a designer in RPG R&D. He has a sweet spot for the Realms, and nostalgia for the biggest dungeon crawl in Faerūn -- Undermountain, the multilevel behemoth below Waterdeep.

Apart from that cool news, the article also contains a look at the map of Undermountain's first level which will be used throughout the month.