I watched the patch notes show and went through everyone's move list to find what the actual names for the abilities that are part of the third Variation are, and I found as many as I could. Some abilities they weren't very clear on so I can't tell what abilities they are. I also tried to include as many of the changes that they noted, and those will be in parentheses.
All MK11 Characters’ Third Variation Abilities
Shang Tsung: New Ability - Contains Force Lift (Ermac), Shake (Smoke), Slide (Reptile), and Super Kick (Rain).
Shao Kahn: Contains Skewered, Spear Charge, and
Frost: Contains Ice Auger, (Air) Icequake, and Core Overload.
Nightwolf: Contains Spirit Tracks, Ancestral Hunter, and Lightning Arrow.
Johnny Cage: Contains High Forceball (lower arc), Low Fireball (lower arc), and Rising Star.
Sonya Blade: Contains Summon K.A.T. Turret and Turret Trauma.
Cassie Cage: Contains BLB-118 Bullet Ricochet, Air BLB-118 Advanceb
Jax: Gains Lethal Clap (Now has a third level at max level which pops up for combos), Enhanced Outranked (Now has both a high and overhead ender), and Ground Shatter.
Scorpion: Contains Misery Blade and (Air) Sin Blade.
Noob Saibot: Contains Sickle Snag, (Air) Shadow Dive, and Sickle Toss.
Baraka: Contains Baraka-Serker, Leg Kabob, and Blade Charge.
Raiden: Contains Lightning Rod and Jo Push (Input Changed).
Jacqui Briggs: Contains Enhanced Air Blast, Bionic Bounce, and (Air) Ground Pound.
Sub-Zero: Contains Arctic Trap, Creeping Ice (faster startup), and a potentially unknown ability.
Kano: Contains Snake Bite and Optic Blast.
Kabal: Contains Gas Blast and Low Spinner, and Hook Grab.
Liu Kang: Contains Shaolin Vanish, Kusari Slam (Now can be executed from Nunchaku Stance), and Nunchaku Stance.
Kitana: Contains Low Fan Toss, Edenian Twist, and Fan-Nado.
Kung Lao: Contains Spiritual Guidance (faster startup on all moves and additional Krushing Blow on the Spiritual Guidance Stance move “”), Vortex (faster startup)
Jade: Contains Deadly Assassin, Vanishing Winds (increased damage), and Divine Forces
Skarlet: Contains Boiling Point, Krimson Shield, and Red Mist.
Erron Black: Contains Acid Pour (Faster animation and Krushing Blow is now on the non-enhanced version) and Netherbeast Trap.
D'Vorah: Fly, Bombardier Beetle, and Flipping Out
Kotal Kahn: Contains Directed Rays, and Flying Glow Kick, Amocualli Totem [Increased Damage Dealt], and Teoyohtica Totem [Decreased Damage Taken].
Geras: Reverse Time and Sand Simulacrum
Kollector: War-Guoit Toss and Relic Pull
Cetrion: Contains Conflux of Elements and Deadly Winds