Patch 2.4 opens the Sunwell Isle for exploration, and offers plenty of daily quests as well as 5-man and 25-man dungeons. The latter is based around super-boss Kil'Jaeden, who promises to have plenty of juicy loot.
Blizzard is also introducing Global Arena Tournaments that allow you to quickly create level 70 characters with epic equipment for a level playing field. You should notice improvements to the combat log too, which should now present information much more clearly.
You might also like to delve into our re-review of World of Warcraft, which launched yesterday alongside the Eurogamer MMO channel.