The Witcher official website has posted a link to a supposed "leaked" internal company demo of Witcher 2: Assassin of Kings on YouTube. Although there are tons of "Witcher 2" videos on YouTube, until this point they were all from the canceled console version "Rise of the White Wolf".
This seems to be a confirmation that Witcher 2 is actually coming afterall.
No release date yet from CDProjeckt.
Cheers.
Witcher 2
Where have you been? Gamebanshee started covering this as soon as the video was leaked over a month ago. 
What we've got so far:
[url="http://www.gamebanshee.com/news/94864-the-witcher-2-assassins-of-kings-trailer-leaked.html"]The Witcher 2: Assassins of Kings Trailer Leaked[/url]
[url="http://www.gamebanshee.com/news/94940-the-witcher-2-assassins-of-kings-interviewfaq.html"]The Witcher 2: Assassins of Kings Interview/FAQ[/url]
[url="http://www.gamebanshee.com/news/95117-the-witcher-2-assassins-of-kings-qaa.html"]The Witcher 2: Assassins of Kings Q&A[/url]
[url="http://www.gamebanshee.com/news/95210-the-witcher-2-assassins-of-kings-interview.html"]The Witcher 2: Assassins of Kings Interview[/url]
What we've got so far:
[url="http://www.gamebanshee.com/news/94864-the-witcher-2-assassins-of-kings-trailer-leaked.html"]The Witcher 2: Assassins of Kings Trailer Leaked[/url]
[url="http://www.gamebanshee.com/news/94940-the-witcher-2-assassins-of-kings-interviewfaq.html"]The Witcher 2: Assassins of Kings Interview/FAQ[/url]
[url="http://www.gamebanshee.com/news/95117-the-witcher-2-assassins-of-kings-qaa.html"]The Witcher 2: Assassins of Kings Q&A[/url]
[url="http://www.gamebanshee.com/news/95210-the-witcher-2-assassins-of-kings-interview.html"]The Witcher 2: Assassins of Kings Interview[/url]