Blizzard other project?

[Axefire]

Blizzard Entertainment is looking for highly skilled Senior Environment Artists to work on World of Warcraft and other projects

This is on Blizzard main page...

What other project are they talking??

Burning Crusade? or Diablo 3? or Starcraft 2? or something new?

 

[Arkillo]

I would assume it would be Burning Crusade or an unannounced project.