UPDATE: It is very likely that this is related to World of Warcraft and will involve the Burning Legion and Sargaras himself. Check out WoWWiki.com for more information.
Blizzard has trademarked The Dark Below and listed it as computer game software. The reference seems tailor made to either a Diablo III or World of Warcraft expansion. What do you think?
- Computer game software; Computer game software downloadable from a global computer network; Downloadable computer game software via a global computer network and wireless devices; Downloadable electronic games via the internet and wireless devices
Blizzard has also promised a big announcement and trailer to be shown at this week's Gamescom. We'll keep you posted as things develop.