Ok... in first place, the Half Life 2: Episode Three will be released in the 2010, aproximately, as Valve said in one of it's pages, other thing: THERE IS NOT such thing as an Episode 3 Oficial Trailer, yet, down here there is a "episode 3 video, which is absolutely a Gmod video, a game which i will talk about later (i'm sorry that i cant upload any video here, just the links :p )

http://www.youtube.com/watch?v=ORhGbjUxHIQ

This is, obviously, a Gmod or a SDK video, i will show you the reasons ...
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