It's looks very high tech for a start, he's holding a gun and possibly stalking someone (a woman?)
Bond is also looking very unshaven and possibly looking like he's not slept for a couple of night? Also not sure how cold it is in that high tech looking room but he's wearing a bog old coat and gloves.
More to come in the future I suspect along with a teaser trailer in the non too distent future. Keep an eye out for it.
Skyfall is released on 26 October this year.