The Witcher 2 - Statement from CDPR

As with the last one, CD Projekt Red has responded about the recently released leaked Witcher 2 footage:

Unfortunately, I have to confirm that the video which appeared a few days ago on the Internet is indeed a presentation of The Witcher 2. It’s a video of a demonstration of the game during the so-called business days of the IGROMIR game expo in Russia,” said Adam Kiciñski, CEO of CD Projekt RED.

“It was a closed demonstration for business partners, representatives of the biggest trade chains and a handful of chosen journalists – one of many such demonstrations CD Projekt RED has been doing in various countries. Unfortunately, despite a declared ban on filming and photography at all such events, someone managed to shoot a video at IGROMIR. Just like last time, we will not comment on that. Simultaneously, we can assure you that all confirmed information will be revealed soon after the game is officially announced.”

Does this happen as much to other developers?