http://de.twitch.tv/esltv_event3?utm....amazonaws.com
This was broadcast live a few hours ago and is repeating. They are old pro CS 1.6 players playing CS:GO at the Intel Extreme Masters.
This is the first gameplay video that has ever been shown.
I'm not really impressed. CS:Source looks better. There will be two game modes. Casual and Competitive mode. Casual will allow you to buy anything at the start that you want. Competitive means you have to buy weapons as before and the matchmaker will place you with people in the same ranking as you.