Even if Valve is planning a HL3 with a new super engine, there is going to be an episode three. Somewhere on some Steam page they refer to "HL2's episodic trilogy".
"HL2's episodic trilogy".
Yes, HL2, EP1, and EP2
HL2 is not considered "Episodic".
It's not fake moron, the picture is from the official TF2 blog, made by valve.
I'm pretty sure that's what they meant, though.
Half-Life® 2: Episode Two is the second in a trilogy of new games created by Valve that extends the award-winning and best-selling Half-Life® adventure. As Dr. Gordon Freeman, you were last seen exiting City 17 with Alyx Vance as the Citadel erupted amidst a storm of unknown proportions.
Great, now I have to finish HL2 and episode 1 and 2.
oh man, they're so good you have no idea.
Speaking of replay value, I have to get all those "new" achievements...
I still have to install it. :/