From BlizzCon! Sunken Temple Changes

Classic dungeons will see an update eventually to match the changes of Cataclysm. Dungeons which are too long or too big such as Sunken Temple will be shortened. Why? Because running around in a confusing dungeon and getting lost sucks.

"Snip, snip, snip"

"Much better"

Yes a lot of the dungeon is getting taken out but I'm sure nothing too important is getting cut out. I think these old dungeons need an overhaul and not just Shadowfang Keep and Deadmines. Thanks Blizzard.