The new Surface devices were on show, along with a range of other brand devices. The SurfaceBook is amazing. Larger than the Surface Pro 3/4, yet light and thin. The form factor is so good for those who want the 'regular' laptop experience along with the advantages of a tablet. It is a bit larger than the SP3/4, which may be handy on some occasions.
While I knew about the new pen and the different 'nibs', it wasn't until Jason Trump asked if I had tried writing with it that I actually did...I thought it would be a similar experience. How wrong I was! The stylus is now even more amazing as it interacts with the screen in a more 'paper/pencil' like fashion. It isn't 'slippery' like the SP3 pen. Better yet, apparently the new pen behaves the same way with the SP3; it is backward compatible regarding key features. It can also come with nibs of different 'hardnesses', just like pencils.
This really will change things dramatically for some. I thought digital ink had come of age with the SP3; this takes it to another level.