Onyxia's Lair Returns for World of Warcraft's Five-Year Anniversary

"According to Blizzard's Under Development page, the developer is working on revamping the classic dungeon for level 80 raiders. To balance the raid for 10-man and Heroic 25-man groups, Onyxia's loot table will be modernized with upgraded versions of the Tier 2 gear she originally dropped." Read more here.