A video clearly marked "confidential video - internal use only" has been leaked onto the YouTube (NSFW), showing footage from an alpha version of The Witcher 2, CD Projekt RED's upcoming action/RPG sequel. The over five minute clip includes narration from Marcin Iwiński and other members of the development team. They reveal "Assassins of Kings" as the game's subtitle and show off the game's graphics, a new dialog system, how the player's actions impact the game world, independent NPC activities, their use of Havoc physics, the addition of QuickTime Events (everyone's favorite), and more. Thanks Dave via Kotaku. There's now a comment about this on The Witcher Website:

“Of course, we can’t and won’t try to deny the facts. The movie that appeared on the various sites yesterday presents our newest project, The Witcher 2, which we’ve been working on for some time. We made something about half year ago, to present the first playable version of the game.” said Adam Kicinski, CEO of CD Projekt RED. “Currently we are looking for a potential publisher (or publishers) for this title, and this leak is an uncontrolled side effect of that process. For today, we are not commenting on anything that concerns the game itself.”

More information about The Witcher 2 will be unveiled alongside the official announcement.