A clip purportedly showing the ending of the in development StarCraft II expansion Heart of the Swarm has hit the net.
While the add-on isn't due for release until 2012 and the video - spotted by Kotaku - may not be legitimate, you're warned that it could contain potential story spoilers.
The movie merges storyboards and has no lip-synching to the dialogue, suggesting it's in the early stages of production.
Kotaku also points out that it features a watermark for The Third Floor, a production company that lists Blizzard as a client.
Blizzard said in a statement that it won't comment "on rumours or speculation", but the fact that the video keeps being pulled from YouTube and Vimeo on copyright claims suggests there's more than a small chance that it's legit.