According to the press release of the Activision-Blizzard earnings call that will take place later today, World of Warcraft is down 100,000 subscribers to 7.6 million. This is a drop from the 7.7M reported for the second quarter of 2013.
This represents a continued decline from the 12 million subscribers reached at the height of WoW's popularity in late 2010. However the most recent subscription decline is a fraction of what previous quarters have seen. For the first quarter of 2013, WoW lost 1.3M subscribers, landing at 8.3M. The second quarter of 2013 lost 600k subscribers. It would appear, at least from the limited data we have been given, that the subscriber losses are leveling off.
Much of WoW's future growth and/or continued life rests upon the back of Blizzard this weekend at BlizzCon 2013, when it is expected they will announce the game's fifth expansion.