Documents detailing Blizzard's business plan from the start of 2010 right through to 2015 have reportedly been leaked to MMOGameSite.
As spotted by Edge, the documents suggest Diablo III will arrive in the fourth quarter of 2011 alongside a Starcraft II expansion and Phoenix campaign. Another Starcraft II expansion is set for launch in the first quarter of 2013, with Diablo III expansions arriving in 2013 and 2014.
The fourth World of WarCraft expansion is seemingly due for release in 2012 along with Sam Raimi's WoW movie, and ahead of the arrival of a fifth expansion in late 2013.
Arguably the show-stealer is Titan, believed to be the codename for Blizzard's next MMOG, which is said to be set for release in the fourth quarter of 2013.
The leaked documents are also rumoured to expose a detailed list of Blizzard's global subscriber database, company revenues, commercial budgets and media packages.
If legitimate, the leak may have originated from Blizzard China. MMOGameSite reports that the office's general manager, Ye Weilun, resigned this week in the face of the drama and that the department is set to be reshuffled.
You can file this purely under rumour and speculation for now.
Earlier today, the ending to upcoming StarCraft II expansion Heart of the Swarm was supposedly leaked online.