Basically the melee change adds a slight incentive to try to score hits to head and body instead of the arms, and a negative incentive to the shoegazers who keep trying to swing at their opponents' feet. And I do mean slight. Basically if you're good enough you can try for trick shots, but it won't make much of a difference either way.
The ranged numbers have basically been adjusted so that torso hits are more lethal than in the last patch, while hits to the limbs (especially the hands and feet) remain less damaging.
For horses, the exposed legs now provide a vulnerable spot to chop at on armored mounts.