Blizzard kicked off Blizzcon 2010 today with the announcement of Diablo 3’s fifth and final class – the Demon Hunter. The class uses crossbows, bolas, traps, and other gadgets to rid the land of Diablo’s evil minions. Blizzard also unveiled a major new feature for Diablo 3 – PvP Arena Battles. Players can join solo or in groups to take on other players through the Battle.net matchmaking service. Read on for more about Diablo 3