I was wondering if Skyrim will have physics on the hair of the character and npc and everything else or the cloth , i mean its using Havok engine and havok engine already has cloth physics:

http://www.youtube.com/watch?v=8cy1ty4nvmc

And seeing how some 3rd person games have cloth and hair physics like The witcher 2, Darksiders(its mostly seen when war is riding his horse check the hair on the horse) etc, i think it would be pretty cool if Skyrim have this so anyone has any info?

Afraid not. They made a big deal a while back about using Havok Behavior, so they would have said if Havok Cloth was being used.