Activision Blizzard, the parent company of Blizzard Entertainment, seems to have outed Blizzard's plans for the next few years. Activision COO Thomas Tippl stated that there are plans for six "proven properties" to be released in the next 36 months - two new World of Warcraft expansions, two new StarCraft titles, Diablo III and an expansion for it.
The interesting thing here isn't necessarily the games themselves, as that is pretty much a given - many of them we already know about or can be assumed. What is interesting is two-fold. First off, these six games coming down the line in three years is a bit tight for a typical Blizzard production schedule. Not to mention we also know there's a seventh game in production, their new MMO Titan.
Secondly, Blizzard themselves apparently are attemtping to counteract the comments made by their parent company, stating, "We havent' made any announcements in regard to plans beyond our current slate. Currently, we are focused on the next content update for Cataclysm, the upcoming release of Diablo III, and continued development on StarCraft II: Heart of the Swarm."
Take those comments as you will. Either Blizzard is losing in the battle to having release dates rushed by Activision, or this is a case of the right hand not knowing what the left is doing. Both could be pretty likely scenarios.