The animation video above, the work of animator Sergey Zhukov, was posted on the official S.T.A.L.K.E.R. 2 Twitter account today. He has left GSC Game World, but according to the Twitter account "his work remains." What, like on Twitter? Sure, stuff posted there remains for the longest.
After reports in late 2011 that GSC had closed its doors, spokesperson Oleg Yavorsky said a cancelation wasn't certain and outlined plans to seek funding to finish the game (so, where's the Kickstarter?). We've contacted GSC for a statement -- should we read this animation reel as proof of life? -- and will update accordingly.