User blog comment:Dar'Rajhin/Skyrim: Hearthfire DLC Details Leaked/@comment-95.193.59.212-20120820215350/@comment-151.201.13.47-20120820225603

they narrowed down the skills to 18 for a reason, to have 6 skills each for magic, combat and stealth. adding necromancy would screw all that up. and necromancy is really similar to conjuration as it is. if they were going to add a skill, it should be unarmed.