If you want to know what Witcher 3 looks like, here's a link to a site called Gamersyde.com where you can download a 3G video version which was shown at recently held press event for the game by CD Project Red.

The link:
http://www.gamersyde.com/download_the_witcher_3_wild_hunt_january_2015_gameplay-33950_en.html



Thanks to danutz_plusplus for finding this, link here:
http://www.rpgwatch.com/forums/showthread.php?p=1061300810#post1061300810

edit:

Here's a recent article from PC Gamer which previews the game, link:
http://www.pcgamer.com/the-witcher-3-hands-on-my-god-its-full-of-bears/

And here's one from Kotaku, link:
http://kotaku.com/i-played-the-witcher-3-and-i-still-have-some-doubts-1681751334

Thanks to Adyta for finding this, link:
http://www.rpgwatch.com/forums/showthread.php?t=27427&page=3

Thanks, Karsten