Requested on Discord by Shockzula#3195:

In TBC where it shows the daily dungeon and daily heroic quests available, it would be so awesome if the tooltip also said the name, or abbreviation, for the name of the specific dungeon that quest is done in. (This feature would be lovely moving into Wrath as well)

There is room in the tooltip between the NPC name and the words "Hold Shift" to fit "MTombs" or some such

That is the view while holding shift, maybe put the dungeon name within the extra info that comes up while holding shift