In the upcoming content patch, a new dungeon system will be added that will take the place of the current Looking For Group system. This will offer great new benefits to both premade and randomly created groups, including:Personally, this is something I wanted in WoW a long time ago. The player group that will benefit the most from this change will be those behind the curve, who are still doing the dungeons the majority long ago left behind. As I joined late in the party on The Burning Crusade, I did very few dungeons in Outlands as there was never a group doing the ones I had quests in.
* Cross-Realm Instances/Grouping
* Instance Teleporting
* Daily Random Dungeons
* Group Disenchanting
This is another sign that Blizzard knows what they are doing with WoW as a whole. They may have fallen down from time to time with class changes (they are fairly overzealous in that area), but overall Blizzard has managed the WoW juggernaut well.
Every announcement out of WoW entices me to go back. Unfortunately, I just don't have the time (maybe that is fortunate :P ).
Update: 31 Oct 2009 - Edited title (world was spelled wrong).