I'm would be surprised if thei is the 360 version, if it was Crytek would be yelling it from the roof tops, tho it does seem to be a bit lower quality than previous footage at the same time.
here is a link to the high quality 1080p version
http://www.gamersyde.com/news_crysis_3_gameplay_preview-13683_en.html
some screen grabs from GAF
massive GIF http://www.abload.de/img/crysis3_psycho_lampzljxb.gif
@TheVoxelman on twitter