According to Joystiq.com
, the site Xbox360Achievements
has leaked the 'chevoos for the next bit of Dragon Age 2
DLC, apparently called "Legacy."
If you're adverse to spoilers, you should stop reading right now.
Last SPOILER warning
The new DLC takes place in the Vimmark Mountains that run just to the north of Kirkwall, it will include more darkspawn enemies that weren't seen in the main story, and can include Bethany or Carver depending on how your particular story worked out.
So there you go; if you hated staying in Kirkwall, missed killing your old darkspawn buddies, and wish you could adventure with your sibling some more, this DLC has everything you need.