There's also 2 major types of Hunting Arts, 1 is the individual weapon HA, the other is general use HA which can be equipped by all weapons "绝对回避" 100% Evasion Wow LS new cool looking special skill from the trailer is called "练气解放円月斩"
SnS have a new function "Medicated Weapon" which grants you various effects. Shown in the scans is "Critical Poison" which increases crit chance.
Dual sword new attack "血风独樂"
So HH and GL have slight changes eh. HH can buff much more rapidly in battle now. If you successfully land multiple hits the monster, your HH notes becomes Accented (double quaver icon), and playing Accent notes will also cast your previous HH buff.
GL gets a "Heat Gauge" which increases when u do shelling/Wyvern fire, and you other normal physical attacks does more damage the higher the heat gauge is.
Bow gets a change to its 2nd back step. The 2nd back step changed to a 'Back Dive', which allows the hunter to evade a bigger distance backwards, and instantly gets Lvl 3 charge.
LBG and HBG also gets a "build in shot", which also allows u to fire different type of bullet other than the normal ones. It is chosen before hand in village. After u deplete all the ammo of your build in shots, you get to fire something special?
New monster! Magician Owl? Can shot sound wave beams!
Credits to Shirakawa 'Nanaka' Wynn for English translation!