Voice actress Ellen McLain - the classically trained opera singer behind Portal's GlaDOS - is set to lend her talents to a mysterious new game from Valve.
That's according to the Tweet teases of her husband and fellow Valve voice actor John Lowrie better known as Team Fortress 2's Sniper - and various villains in the Half-Life series.
Lowrie revealed on the social networking site that the voice of GlaDOS "is going in Tuesday for a new game and more Portal work."
Of course it's already known that Portal 2's set to see a free add-on pack with new test chambers, but unless McLain is also working on DoTA 2 here other half may have outed work on something secret.
Ellen has previously worked as the voice of the Overwatch in Half-Life 2, Half-Life 2: Episode One and Half-Life 2: Episode Two.
She also supplied the voice of the announcer in the now free-to-play Team Fortress 2... but that doesn't count as a "new game", does it?
What do you reckon it could be friends?