The release date is 2014 for PC platform, the ported version will be available to the PS3 and Xbox 360 console.
Blizzard was targeting late 2013 for the beta test, said Game Director Josh Mosqueira in an interview from GamesCom.
The Diablo 3 pre-expansion patch Features
( It's a FREE UPDATE alongside Reaper of Souls expansion ). You can check this news on Amazon Forum- Loot Runs and Nephalem Trials
- Account wide Paragon levels.
- Unlimited paragon leveling until a maximum of 9999, with a bonus of +250 in each main stat (strength, dexterity, intelligence, and vitality)
- A new gem type: Diamond
Diablo 3 Expansion Features
- One new character class: the Crusader (http://www.diablowiki.net/Crusader)
Impenetrable armor, gleaming weapons, and heavy, heavy damage–wield the power of the Crusader, unbreakable new hero of the mortal realms
- A fifth act taking the story of Diablo III
From the sprawling streets of Westmarch to the ancient walls of the Pandemonium Fortress...
- A new artisan: the Mystic
- A new level cap of 70 (up from 60)
- The Loot 2.0 item system.
- Many new weapons and new pieces of armor
- New skills and runes for existing class
- New monsters to defeat