I took time to write down all possible combo i could see in the patch notes; along with the TP and recast timer of each ability used in the combo. Hope this help people prepare for the patch!

Pugilist

Pummel → Aura Pulse = Chance to inflict Slow

Pummel → Concussive Blow = Increased Damage

Pummel → Concussive Blow → Simian Thrust = Increased Damage

Pounce → Sucker Punch = Chance to increase absorb MP effect

Pounce → Demolish = Dispels an effect

Pounce → Demolish → Howling Fist = Increased Damage

Pummel: TP: 1000 / Recast Time: 10sec.
Pounce: TP: 1500 / Recast Time: 20sec.
Concussive Blow: TP: 1500 / Recast Time: 30sec.
Sucker Punch: TP: 1000 / Recast Time: 15sec.
Demolish: TP: 1500 / Recast Time: 30sec.
Aura Pulse: TP: 1500 / Recast Time: 40sec.
Howling Fist: TP: 3000 / Recast Time: 80sec.
Simian Thrust: TP: 2000 / Recast Time: 80sec.

Gladiator

Fast Blade → Flat Blade = Increased enmity

Fast Blade → Savage Blade = Increased damage

Fast Blade → Savage Blade → Goring Blade = Increased Bleed damage

Riot Blade → Rage of Halone = Increased accuracy

Fast Blade: TP: 1000 / Recast Time: 10sec.
Savage Blade: TP: 1000 / Recast Time: 30sec.
Flat Blade: TP: 1500 / Recast Time: 10sec.
Riot Blade: TP: 2000 / Recast Time: 80sec.
Rage of Halone: TP: 1500 / Recast Time: 20sec.
Goring Blade: TP: 3000 / Recast Time: 80sec.

Marauder

Heavy Swing → Skull Sunder = Increased enmity

Storm's Path → Whirlwind = consume TP to increase damage when you are below 50% HP

Brutal Swing → Maim = Increased accuracy

Brutal Swing → Maim → Godsbane = Increased critical rate

Heavy Swing: TP: 1000 / Recast Time: 10sec.
Brutal Swing: TP: 1500 / Recast Time: 20sec.
Skull Sunder: TP: 1500 / Recast Time: 30sec.
Maim: TP: 1500 / Recast Time: 30sec.
Storm's Path: TP: 1500 / Recast Time: 30sec.
Whirlwind: TP: 3000 / Recast Time: 80sec.
Godsbane: TP: 3000 / Recast Time: 60sec.

Archer

Heavy Shot → Quick Nock = Fivefold attack and coversion to single target

Heavy Shot → Leaden Arrow = Increased heavy duration

Heavy Shot → Leaden Arrow → Wide Volley = Increased accuracy

Piercing Arrow → Shadowbind = Increased bind duration

Piercing Arrow → Gloom Arrow = Chance to inflict blind

Piercing Arrow → Gloom Arrow → Bloodletter = Inflicts additional damage when bleed fades

Heavy Shot: TP: 1000 / Recast Time: 10sec.
Piercing Arrow: TP: 1000 / Recast Time: 20sec.
Leaden Arrow: TP: 1500 / Recast Time: 30sec.
Shadowbind:TP: 250 / Recast Time: 40sec.
Gloom Arrow: TP: 1000 / Recast Time: 10sec.
Quick Nock: TP: 1000 / Recast Time: 180sec.
Bloodletter: TP: 1500 / Recast Time: 80sec.
Wide Volley: TP: 2000 / Recast Time: 80sec.

Lancer

Vorpal Thrust → Impulse Drive = Increased critical rate

Vorpal Thrust → Impulse Drive → Chaos Thrust = Increased critical rate

True Thrust → Heavy Thrust = Increased stun duration

True Thrust → Leg Sweep = chance to inflicts stun

True Thrust → Leg Sweep → Doom Spike = Increased accuracy

True Thrust: TP: 1000 / Recast Time: 10sec.
Vorpal Thrust: TP: 1500 / Recast Time: 20sec.
Heavy Thrust: TP: 1500 / Recast Time: 20sec.
Impulse Drive: TP: 1500 / Recast Time: 30sec.
Leg Sweep: TP: 1000 / Recast Time: 30sec.
Doom Spike: TP: 3000 / Recast Time: 60sec.
Chaos Thrust: TP: 3000 / Recast Time: 80sec.

Conjurer

Stone → Stonera = Increased damage and conversion to single target

Aero → Aerora = Increased accuracy and conversion to single target

Stone: Cast Time: 2sec. / Recast Time: 6sec.
Aero: Cast Time: 3sec. / Recast Time: 6sec.
Stonera: Cast Time: 3sec. / Recast Time: 30sec.
Aerora: Cast Time: 4sec. / Recast Time: 20sec.

Thaumaturge

Thunder → Thundara = Increased damage and reduced recast time when Stun is not inflicted

Thunder → Thundara → Thundaga = Increased critical damage

Fire → Fira = Reduced cast time

Fire → Fira → Firaga = Reduced cast time

Thunder: Cast Time: 2sec. / Recast Time: 6sec.
Fire: Cast Time: 3sec. / Recast Time: 8sec.
Thundara: was not listed / Recast Time: 30sec.
Fira: Cast Time: 5sec. / Recast Time: 16sec.
Thundaga: Cast Time: 5sec. / Recast Time: 45sec.
Firaga: Cast Time: 8sec. / Recast Time: 7sec.