Patch 1.0.5
The Diablo III, v1.0.5 patch has not yet been released. This patch will feature numerous game changes and improvements, including a big nerf to Inferno difficulty, skill tweaks, and the introduction of the Monster Power customizable difficulty system, as well as the Infernal Machine end game event.
The patch was first teased in a Sneak Peek developer blog post on September 13, 2012[1].
Defensive Skill Changes
In our eternal quest to promote build diversity; we’ll be making changes to defensive skills across the board while simultaneously reducing incoming damage. The net result is a survivability buff for players, and an increase in build options as defensive abilities become less “mandatory.”
New Event: Infernal Machine
The Infernal Machine is a device that will allow level-60 players to battle “uber” versions of some of Sanctuary’s most nefarious bosses. While the rewards for defeating these bosses will be great, some assembly is required.
New System: Monster Power
More details were added in subsequent developer blogs[2] and interviews[3][4], heightening fan anticipation for the full patch details... which have yet to be released, and have no ETA.