Smithing - Heavy Armor - Block - TwoHanded - OneHanded - Archery
Magic
Illusion - Conjuration - Destruction - Restoration - Alteration - Enchanting
Stealth:
Light Armor - Sneak - ? - ? - Speechcraft - Alchemy
So, we are left with two unconfirmed skills in the stealth tree. Quite a surprise to me.
Stealth skills in previous games were Acrobatics, Hand to Hand, Mercantile, Security and Short Blade. We know that Acrobatics and Hand to Hand are out, and I don't think they will create another skill just for daggers, which leaves us with Mercantile and Security.
However, when compared to the other skills, both options seem quite lacking. Mercantile is basically just a branch of Speechcraft, and Security's only function is to open locked chests and doors, which can be easily accomplished with Alteration spells (and that skill is infinitely more useful). So, either they come up with better uses for Mercantile and Security, or introduce some new skills.
Any thoughts? :shrug: