I was hoping that Episode 1 would be out this month or early next. Why is Ep2 in development when the first one isn't even done yet? Silly Valve.
No silly you for not having basic common sense or apparently understanding about the size and structure of development houses like Valve.
Valve is split into development teams working on multiple projects at the same time. Including DaD, CS, HL and other projects. The probably have in excess of 100 employees now.
What makes sense is to use your resources wisely. While ep 1 is being finised work is started on ep 2 getting all the content, textures, map work, scripting going. Later the same will hapen for ep 3 and so on.
The Whales name is Bob.