Levit0
Blizzard is currently teasing something on Diablo3.com, similarly to how they’ve teased new projects in the past. With a cryptic message on display before taking you to Diablo 3’s main site.
The message seen in the above image is: “Death, at last, shall spread its wings all over” – Book Of Tyrael. Also a message of “Reaper Of Souls” appears in the address bar on the page as well.
More than likely it’s hinting at an expansion pack for the game, or some sort of content update.
[Source]
