Our Stealth system, which has survived dozens of patches unscathed, is seeing some new action in Mists of Pandaria. In spite of the developers' previous attempts to normalize Stealth levels via the removal of Master of Deception, they're bringing some of that flavor back. Shadow Walk and Shroud of Concealment bring brand new elements to our Stealth repertoire.
Shadow Walk looks to improve our own personal Stealth capabilities, while Shroud of Concealment allows us to share our Stealth with others. The duo is the most exciting thing to happen to Stealth since Distract, and I look forward to finding new and unique ways to abuse both of them.