Just a reminder/warning that our Diablo 3 Beta forum is currently overflowing with spoilers of every sort, courtesy of posters eager to share the full game info that has been data-mined elsewhere. We will not be posting any SPOILERS on this main page, and we monitor the titles of forum threads, but if you click into them, you will find out many, many things about Diablo III that you might have wished to remain ignorant of.
Also, just because something can be found in the beta version of the game code (you can get the client here, though you can’t play w/o a valid beta key) does not mean it will be functional in the final game. Programmers generally don’t clean up the code as they go; they just keep adding new stuff and deactivating the old, so you wind up with a rat’s nest of old features, abandoned ideas, deactivated functions, names staked out for potential future features, and so on. Just because there are all these names for types of PvP games, or Easter Eggs, or player titles, or secret level details, or Item Sets, doesn’t mean we’ll ever get to play them. And things like the item affixes, runestone effects for every skill for the Barbarian, Monk, Witch Doctor, Demon Hunter, and Wizard may be outdated by the final game.
That said, if you want to know moar and aren’t worried about spoiling the surprises, our Diablo 3 Beta forum is the place to be. Well over 1500 2500 people are there right now.