Nothing new for those who have been keeping up on the News & Rumours forum, but the following is the first public announcment of The Wave and the latest public updates on the other three locations:

2008 Preview

Walt Disney World Resort Press Release
December 31, 2007

Themed Restaurants -- The introduction of innovative dining experiences continues with four restaurants opening during 2008. Landry's Restaurants, which just introduced a taste of Asia to Disney's Animal Kingdom with the opening of Yak & Yeti Restaurant, will treat Downtown Disney guests to a face-to-face encounter with a dinosaur at T-Rex: A Prehistoric Family Adventure, A Place to Eat, Shop, Explore and Discover, which combines table-service dining and retail in an interactive prehistoric environment built around water, fire and ice. At Epcot, China's Nine Dragons table-service restaurant will close in early 2008 to make way for an innovative dining room, scheduled to open in the fall, featuring five cooking stations where guests can interact with chefs from China. At Disney's Contemporary Resort, The Wave, opening in the spring, will serve up American cooking blended with world flavors. In the Italy pavilion at Epcot, Tutto Italia Ristorante ("Everything Italy") is the newest restaurant for California-based Patina Group, which has a portfolio of nearly 30 restaurants. The location will be expanded for a grand opening late in 2008.
The press release recaps other new additions around the resort and the 2008 Disney Dream Giveaway, but in no greater detail than what has already been posted in this forum.