Assuming we’re getting the January KR balance update, BM’s will get these changes:

Blade Master

Dragon Cleave (RB)
– increase damage
– CD is changed from 1.2 sec to 2.5 sec
– add effect: recover 8 Focus over 4 sec
– add effect: gain max speed for Stab (RB), Heaven Sunder (RB) for 4 sec.

Stab (RB)
– increase damage of Tier 2/3/5 Stage 1, Tier 5 Stage 2
– change to Fire elemental
– Tier 5 Stage 2: the effect of “recover 2 % HP on crit” is changed to “convert 5% of damage to HP recovery on hit”

Heaven Sunder (RB)
– change to Lightning elemental

Full Moon Slash (TAB)
– Tier 2 Stage 1: Focus recovery is increased from 3 to 4
– Tier 2 Stage 1: the effect of “gain max speed for Blade & Soul Gold (NA), Heaven Sunder (RB) when dealing critical damage under Blade Stance” is changed to “gain max speed for Stab (RB), Heaven Sunder (RB) when you hit under Blade Stance”

Draw (LB)
– Tier 4 Stage 3: the damage increase effect is maintained for a certain period, even after casting this skill.

Front Kick (X)
– the effect of “Induce Stun on casting target” is removed
– Tier 2 Stage 2: add effect – “Induce 2 sec Stun” and “Stack 1 Bleed”

Full Moon Slash (TAB)
– change to Fire elemental.

I don’t really play BM myself but it looks like buffs to me.