Happy third birthday, Diablo III [official site]. Why it feels like it was only yesterday you were a little tyke that wouldn't load on my computer. Now look at you! All grown up and making, ah, cow puns.
In celebration of the anniversary, Blizzard are breaking the fourth wall, giving a cheeky wink to the camera, and calling upon something called The Cowpocalypse. Long-time fans of the series will know that cows have a place in the heart of Diablo. While Diablo III's tooltips have previously stated there is no cow level, for a limited time players will be able to take a peak inside the Layer of Hell dedicated to Burger King executives.
Until May 21st, there's a chance that encounters with special treasure goblins will trigger a Cow Level portal that will give you entry into the secret plane of cow men. So I guess if 50 is gold and 60 is diamond, then three is mince.