I would venture a guess (and JUST a guess) at :
- Forward Grip
- Pistol Grip (or equivilent aka Thumb-hole stock)
- Collapable or Folding Stock
- Grenade Launcher (Muzzled launched Rifle grenades)
- Detachable Magazine (Shotgun)
- A list of an "Evil" weapons they know of and want banned.
- Fixed magazine > 10 rounds (Feinstein's Bill)
- Most likely Federal registration of all grandfathered weapons that meet the above.
And any "mistakes" or "loopholes" in the old bill will be plugged and fixed.