If you fancy playing a pandaman in World of Warcraft but don't much fancy actually buying the Mists of Pandaria expansion, good news! Blizzard will be opening every race up to all players, whether they own the expansion which introduced them or not. Yes you, person who somehow has kept playing WoW all these years without buying a single expansion, will soon be able to have goblins, werewolves, space-goats and all that jazz.
"We want the entire World of Warcraft community to be able to embrace their inner goblin, blood elf, worgen, draenei, or pandaren from the moment they step foot into the world of Azeroth."
You'll still need to buy expansions to access their new areas and whatnot, of course.
Say, speaking of MoP, did you see the fancy opening cinematic yesterday?