Portal 2 definitely on the way

GDC08: Lead designer confirms that a sequel to Valve’s hit puzzle title is planned

Though Valve’s Doug Lombardi has previously stated that gamers could definitely expect more Portal action in the future, for the first time a direct sequel to the title has been name-dropped.

Speaking in an interview with G4TV, Portal’s lead designer Kimberly Swift stated: ‘I believe Doug Lombardi, who is our lead marketing director at Valve, has announced Portal 2.”