Hardware specs are unknown. The times where the in game FPS counter can be seen seem to show low 40's to low 60's for FPS. V-Sync didn't appear to be enabled when the graphics settings were shown. Also, the video was a little blurry and unfocused on the screen when the graphics settings that would show the resolution were shown. It did appear that all graphics settings were turned to the highest settings for the beginning of the video.
The YouTube video is here:
At 7:08 and 9:10 in the video you can see the tank drive into a pile of lumber and all the pieces fall individually. Also, you can see the water effect of the waves in many parts of the video.
One person in the video seemed to mention May20th. However I don't know what the relevance of
that date is. Also there was someone mentioning the end of the year.