No, there is no trailer for Valve’s upcoming Counter-Strike global offensive. The “leaked” trailer is actually an old trailer for the Korean online game Counter-Strike online.
Counter-Strike Online is a MMO for the Korean market – mostly unknown on the Western market. Nexon (MapleStory) published it in Korea while GigaMedia’s IAHGames published this game in Malaysia and Singapore (iahgames.com)
For promotional purposes a trailer for Counter-Strike Online was created that some people uploaded as the new Global Offensive trailer.
Counter-Strike Online Trailer
Here’s the trailer for the old Counter-Strike Online ga,e:
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Once Valve will release a real official trailer for Counter-Strike Global Offensive, you will find it on our site.