Fire! Brimstone! Dragons! Heroic Van Cleef! The world is going to get turned upside down when Cataclysm hits, and the shadow priest spec is going to get turned upside down right along with it.
You've no doubt already read a bit about the upcoming stats changes with Cataclysm. As you can guess, a lot of these changes are going to hit shadow priests like a hammer to the face. The conventional wisdom of holding spell power in higher regard than all other stats is out the window, along with the spell power stat itself. And we may be facing a serious nerf to our legendary survivability.
Blizzard's given us a delicious sneak peak into the future of shadow priesting -- there's some good stuff, some bad stuff, and some who-the-hell-knows-yet stuff. Follow me after the break to get a glimpse of "Shadow Priesting 4.0."