Yup, another leak has hit the Internet. This time, somebody was brave enough to post a video containing the full introduction for Crysis: Warhead.
If you're planning to get this stand-alone expansion, you might want to have a look at this video. It shows you how exactly the game looks like and what you'll find in it.
The introduction looks pretty good. No doubt Psycho is way more aggressive than Nomad...Warhead is coming out in September, stay tuned!