It's always interesting to get more behind the scenes about how World of Warcraft is created, and Blizzard is doing exactly that with the all-new Engineer's Workshop series of posts. This week's column is about anti-aliasing and the new technology Blizzard is using to help evolve the game engine and update it going forward. Keep in mind, World of Warcraft is a ten year old game, and graphic updates like these are necessarily planned out to keep the game's look from sliding into obsolescence.
I admit I'm no expert on the technology being discussed, but if you are, here's a nice summary to get you started on explaining the whole thing to me in the comments. Use small words.