According to Blizzard's website, Diablo III will officially be going live on May 15th. It is available for pre-order, and eventually pre-download, from Blizzard's Battle.net service. Users will download the game before it actually is released, and the game will be enabled at midnight on the 15th. The good news: System requirements for Mac users are pretty mellow. Mac® OS X 10.6.8, 10.7.x or newer Intel® Core 2 Duo NVIDIA® GeForce®...