The latest release is the classic AD&D 1ed Vault of the Drow from the bygone days. Below is the lo-res version. Go to the WotC link for the larger, hi-res version.
|WotC link for larger version|
In an odd bit of serendipity, the FtF group is just now finishing up D2 and getting ready to go on to explore D3. That is, after they take care of the grey plague ravaging the land as a result of Lareth's machinations.