Thanks for the replies guys.
I was hoping to reanimate fallen npc creatures and enemies, but more so a system where you can summon undead from looted corpse parts. so if I'm preparing to go to Cyrodil, I will do some pve, harvest bodyparts and skeletal remains, and then use those items to summon my undead minions; as well as killing a certain creature and binding it to me and making it my undead minion - something along those lines like Skyrim. Ah well, I figured as much, but I'm hopeful since I know this is a MMO where content will be added for eyars to come, so i'll remain hopeful and give my feedback to the devs and see what happens.
I'm happy we'll be getting the ability to summon Daedra though. I'd love to find out what kinds of daedra though - if we can summon scamps, clannfear, daedroths, dremoras etc that would be awesome and would make up for a lack of undead for now. If I can play a plate wearing warlock, that will be pretty damn cool in itself.
@Shinros, thanks for info about the foundry, i'll definitely explore that website and find out more.