BlizzCon Item Set Previews
      

  It's misleading for me to refer to them as sets, actually, although that's how they're designed. They're probably better described as item 'looks' or even item tiers. These aren't specific items with specific names and stats, but rather a tier which can represent any number of names or stats behind them.It's the way Diablo II handled it. We're do..
      

http://www.blizzblues.com/us/blizzcon-item-set-previews-27026323953.html