New Dungeons:
Forge of Souls
Pit of Saron
Halls of Reflection
All three are fairly fun and a couple of the bosses are pretty darn tough. They are pretty small for instances but all 'mesh' into one instance if you wish to play them that way and it's pretty fun. Especially the end of Halls of Reflection which has a real 'oh shit run!!!' moment in it.
Not participated in the new raid yet but from what I hear it's challenging and fun.
Other new features:
The Dungeon finder is really working well, takes a few mins to get into groups as any type of player, makes a real change from pleading and begging to be let into groups as a Warrior dps'er. You're thrown together and off you go, of course it's luck of the draw and you can get some dodgy players (only met one ninja so far) but you can also meet some real good folks that you'd like to run with again (I want cross sever friends now!) I hope this gets extended to raids as it'll be pretty good if it does.
The new map is pretty awesome and makes Quest Helper almost obsolete now. It has 3 panes showing you the map, a list of quests and the current selected quest text, also you can shrink the map down and continue to play the game which negates a feature previously 'vital' in Cartographer. Very nice.
With 2 instance runs and after running the new instances I had 3 gear upgrades which has really helped my dps along
very nice stuff, had a lot of fun yesterday evening.