There are Update 30 Release Notes on DDO.com for a new patch that's now live in Dungeons & Dragons Online (thanks Dave). This includes a new anniversary map, as they note the D&D MMORPG is now 10 years old, as it first launched on February 28, 2006. The patch notes are detailed, but they provide an overview:

Celebrating the Anniversary, Dungeon-style!
Check out a new anniversary-themed dungeon in House Phiarlan! This dungeon is available from level 1-30.

Gnomageddon!
The Gnomes have arrived! Free to VIPs and available in the DDO Store.

Gnomes: Gnomes are a sharp-witted race that excel in a variety of roles, including arcane spellcasters. They start with a +2 bonus to Intelligence and a -2 penalty to Strength. This purchase allows you to create new Gnome characters on any server. FREE FOR VIPs!

Deep Gnome Iconic: Start at level 15 with a powerful Deep Gnome Earthen Illusionist! Deep Gnomes have access to special racial abilities and unique Illusion spells. This purchase allows you to create new Deep Gnome characters on any server. As Iconic Hero characters, Deep Gnomes also have the ability to use the Hall of Heroes Passport feature when entering the game. FREE FOR VIPs!