Due for release on May 19th, this DLC will include new multiplayer maps, a new multiplayer mode, new strikes, new stories, a new raid and will include the Reef social area. There will also be hundreds of new pieces of gear and weapons up for grabs, just like in The Dark Below.
If you hop onto www.destinythegame.com you'll see at the bottom 6 symbols with dates on them. These dates are when we can expect to see more information.