Still waiting for the next installment of Half-Life. So are we. While Valve isn't saying anything about the Half-Life 3 or Episode 3, we now have reason to believe that it'll be a scary affair.
Speaking to Edge magazine, according to CVG, Valve boss Gabe Newell said, "I feel like we've gotten away from genuinely scaring the player more than I'd like, and it's something we need to think about, in addition to broadening the emotional palette we can draw on."
While Newell didn't mention a specific upcoming Half-Life specifically, it was clear that the developer was thinking carefully about how to scare the series' core fans: "The death of their children. The fading of their own abilities."
Episodic = additional content, same engine. Time = months. Time != years.