In case I'm not the 20'th person who pointed this out:
HtH has been replaced by perks, just like every other weapon skill.
It's nothing we didn't knew already.
Now we have one handed and two handed, each with a perk-tree branching out in several specialties.
It's something along the lines of:
-one handed: weapon, shield, dual wielding
-two handed: weapon, bow, hand-to-hand
Why in oblivion would Hand to Hand be part of two-handed? Unless you fuse your hands together (Like Oblivion's [censored] standing power attack), it operates more as a one-handed thing. Even if you use both hands empty, it's then a form of dual-wielding.
One-handed is Swords, Axes, Maces, Daedric Cresent Blades, Fists,
Two handed is for Two-handed Swords, Hammers, Axes, and whatever polearms and spears get into the game.
Bows are part of the Archery skill, not Two-handed weapon skill
Argument for hand-to-hand being a one-handed weapon: How many fists does it take to throw a single punch?