Battle.net now has a preview of the upcoming patch for Diablo III that will bring the action/RPG sequel to version 2.3.0. They describe a new overhaul of the crafting system, a new zone that will help usher in new bounties and changes to the bounty system, changes to Nephalem and Greater Rifts, and a better payoff for Infernal Machines. They don't specify when the patch will go live, but they do invite players to preview it on the PTR.