During an X-Play interview, the lead designer Portal admitted that Portal 2 is in the works. She thought that Valve’s marketing honcho, Doug Lombardi, announced Portal 2 earlier. Unfortunately, for her, nothing of the sort was revealed.
While Portal was definitely a great game in its own right, I’m not sure how I will respond to Portal 2. More of the same? I wish Valve and the Portal folks the best of luck, because it’s going to be hard to top the original.