The Arcanite Ripper drops from Tenris Mirkblood in Karazhan. He's above Attumen and drops this and a bat pet. If you right-click to use the Ripper you jam away, air guitar style, along with music.
The Infection triggers in two minutes now.
Floating necropoleis have started to appear above zones and cities.
Hm, I think I may just log all my toons out in high places from now on, lol.
http://www.youtube.com/watch?v=UgcfPsGPfOU
Here's a few shots of the Necropolis above Orgrimmar. Forgot I had the Hunter Skill "eagle eye" and was able to bounce it off of the mountains near it for these views.
Look close in the first pic, and you can see Ullr and Spot standing just off the road below the Necropolis
nice screenshots! :D