The Diablo III website announces that the upcoming version 1.0.8 patch for Diablo III is now live on the Public Test Realm for Blizzard's action/RPG sequel. They offer full instructions on how to set yourself up on the PTR if you want to experience the improved monster density and other changes coming to the game. They offer a set of Public Test Realm Patch 1.0.8 Notes explaining all the changes, but at this point there's no indication of when this patch is expected to leave testing.