تم الاعلان عن اللعبة من قبل احد مسؤولي فالف عن طريق برنامج X-Play الذي يعرض بقناه G4TV

On tonight’s episode of X-Play, lead designer for Portal, Kimberly Swift, confirmed that there will be a Portal 2. This is pretty much a given as Doug Lombardi, Valve’s Director of Marketing, had previously stated that “more Portal is definitely on the way.”