It looks like Valve might finally get over its allergy to threequels. According to Erik Wolpaw, the writer of both Portal games, there's already a "pretty awesome starting point" for Portal 3 in place if Valve is willing to give it the greenlight.
Speaking to DidYouKnowGaming, Wolpaw revealed that he and fellow Portal 2 writer, Jay Pinkerton, had come already come up with a few ideas for Portal 3. Although he did clarify that there's not a concrete script or anything, they do have a starting point that they "like a ton". Wolpaw also added that an "actual idea" for Portal 3 doesn't mean it will happen. In his words, there's "a lot left to do" to make Portal 3 happen, which includes finding people at Valve committed to working on it.
This isn't the first time Wolpaw talked about Portal 3. Earlier this year, Wolpaw lobbied for Portal 3, saying he'd like for the game to happen before he gets too old.
Wolpaw's interviews offer valuable insight into the inner workings of Valve. In the same interviews, Wolpaw explained how there's a difference between having an idea for a game and "actually committing to making a game". Wolpaw also clarified that Valve isn't just "a bunch of people sitting around sipping gin and tonics by a pool" and that "everybody's working".