Last night I had a 750pt game with my brother in law to familiarise ourselves with the new rules.
I took my eldar list up against his orks, which was a bit one sided as I took a prism and 3 SL Walkers, but the thing that struck me most was the change in CC and also in psychic powers.
I may have just been rolling badly but I failed to doom anything as I either failed the test or he resisted my doom, and only managed to guided my walkers once.
CC seems to have taken a massive nerf with the new charge rules of 2d6 there was a point where a mob of boys would have toasted my dragons in CC but I managed to get 2 kills before he charged which put him out of range by 1 inch from what he rolled.
It resulted in him being tabled with me losing only 1 pathfinder out of my whole army, I think this is a new era for shooty armies.