A perk of patch 6.0 is the new character models. Currently all models are already redone (except panda, worgen, goblin), though Blood Elve models are still being developed.
A new service Blizzard created, is the Boosted character
service. This service will boost your character of any level up to level 90 and given level appropriate gear, so you can jump into the action.
Players who preordered Warlords of Draenor will be be given one free character boost to instantly level a character up to 90
Also new to World of Warcraft are character delete undo service, where players who have deleted a character above level 40 can undo the deletion.