Firion:
Straight Arrow: greatly increased speed. Hard to react after it is released.
The 3 Magic Arts: can't see the difference.
The 3 Magic Arts could be shot continuously up to 3 times, interchangeable too. E.g:
Fire > Fire > Fire
Thunder > Blizzard > Thunder
Blizzard > Fire > Thunder
Reel Axe: the second part of the Brave attack could be done even if the Axe hit missed.
The second part of the 3 ground Brave attacks (Knife/Axe/Lance) are interchangable, depends on your input:
Towards + O = Lance follow up (slash > arrow)
O = Knife follow up (punch)
Away + O = Axe follow up (a few hits then knocks enemy away)
Terra
Ultima: downward wall rush.
Kuja
Seraphic Star: keep chasing the enemy even after the hit box appeared. Hard to dodge. Can move freely when using Seraphic Star (Holy Star).
Kefka:
SS Blizzaga - the large chunk of ice (before split) cause guard stagger (Ranged Mid priority)
LS Thundaga - tracks vertically too.
Golbez:
Floating & Gravity System: If the initial palm hit is blocked, the little orb+laser will not appear now.
Gravity Force (Close): the little orb he shoots AFTER warping will cause guard stagger (Ranged Mid priority)
Lightning:
Wataga: cause guard stagger (Ranged Mid priority)
Vaan:
EX mode bonus: Increase damage (not sure by how much), pressing R+[] will switch to bare hand instantly.
Bartz was seen using Vaan's Katana in the PV.
EX core gives less EX force now. A 4 wings core fills about 50~70%.
Zidane
Booster 8: a forward rush attack, slightly longer range than Rumble Rush.
Cecil
Shadow Bringer: Super short range, but fast.
Squall
Fated/Aerial Circle: Increased Absorb effect.
Shantotto
Retribution: cause guard stagger (Melee Mid priority)
Stun: CPU have done Stun>Retribution combo. (But the reporter said that it seems to be avoidable if you spam dodge fast enough)
CoD
Wide Angle Particle Beam: goes further, in high speed. Can go to the air.
Golbez
Sector Ray: has both ground and air versions.
Exdeath
Almagest: Added Magic Block effect and cancel-able during startup.
Kefka
Forsaken: Kefka can move during the attack.
Sephiroth
刹那 (Moment/Instant): short range, somehow similar to WoL's Dayflash
Heartless Angel: Increased after lag if the move is canceled.
Scintilla: Increased Block duration. Almost like Shield of Light?
WoL
Sword Thrust: 1st hit (shield toss) has little verticle tracking
Emperor
Dynamite: Cause Guard Crush (Ranged High priority) when fully charged.
Jecht
when used as an Assist character,
Air Brave assist: Jecht Stream (Full) O, O, down+O
New Summon from FFXIII: ブリュンヒルデ Brynhildr
Possible new stage (FFXI) shown in PV: 天象の鎖 Empyreal Paradox
New basic ability
Multi Ground Dash : R+triangle, dash on ground towards opponent.
Multi Ground Dash+: R+triangle, dash on ground towards opponent. Turning possible (with analog stick)
Ground Dodge Distance Up
Assist Lock on
New music:
FF7 - J.E.N.O.V.A
FF4 - Final Battle
FF6 - Magic Train