Kotaku has secured an actual photograph of the rarest beast in gaming - a Blizzard release schedule.
The slide, from a presentation by Activision Blizzard chief finance officer Thomas Tippl, has StarCraft II, World of Warcraft: Cataclysm and the upgraded Battle.net down for 2010 launches. Diablo III, Blizzard's unannounced MMO, and "StarCraft Expansion" (presumably meaning the second and third chapters of the StarCraft II trilogy) reside in a column titled "next few years". Tippl described the lineup as a "full pipeline".
That pretty much squashes any lingering hopes that Diablo III might see the light of day next year. It looks like 2011 at the earliest for the action-RPG, now.