marvel log from Joystiq who says they got it from Capcom Unity said:
Captain America
- Can double jump.
- Charging Star causes untechable knockdown.
- Charging Star causes horizontal knockback.
- M. and H. versions of Charging Star cause less damage.
- Opponent's untechable time after a Shield Slash has been decreased.
- L. Shield Slash can OTG.
- Added some invicibility time to his Backflip.
- Reduced opponents knockdown time after a Hyper Charging Star.
- Damage for assists γ and β have been increased.
- Number of hits in Hyper Charging Star can be increased through rapid buttons presses.
Deadpool
- Ground normal moves can be canceled by his taunt.
- Mad Wheel cannot be canceled.
- Opponent down time after a throw has been increased.
- H.Ninja Gift floats lower.
- H.Ninja Gift causes longer opponent incapacitation.
- Incapacitation time from H. Ninja Gift decreases with combo length.
- Chimichangas!! can be activated from Quick Work.
- Special attacks can be canceled with a Teleport.
- Number of hits in Happy-Happy Trigger (ground and air ver.) can be increased through rapid button presses.
Dormammu
- Ground chains can go up to 3 hits.
- L. attacks cause greater push back.
- Dark Matter can be canceled.
- Flame Carpet will disappear if Dormammu is hit.
- Normal throw causes untechable knockdown.
- Dark Spell and Liberation can be performed in the air.
- Liberation (2 red, 1 blue) is guaranteed to activate (active from 1st frame).
- Liberation (2 red, 1 blue) causes untechable knockdown.
- Liberation (2 red, 1 blue) rocks come out slower.
- Liberation (2 red, 1 blue) rock damage has been increased.
- Liberation (2 blue, 1 red) is guaranteed to activate (active from 1st frame).
- Number of hits in Chaotic Flame can be increased through rapid button presses.
Doctor Doom
- j.H. startup reduced, hit box enlarged.
- j.S. causes untechable knockdown.
- Total frames for j.Photon Shot have been reduced.
- Number of hits in Photon Array (ground and air ver.) can be increased through rapid button presses.
- Number of hits in Doom's Time can be increased through rapid button presses.
Hulk
- Added new move "Incredible Punch."
- "Incredible Punch" can be chained into from a variety of L. and M. attacks.
- Gamma Charge given higher hit priority.
- Gamma Charge now has super armor.
- Gamma Charge Second floats higher.
- Anti-air Gamma Charge Second M causes wall bounce.
- Decreased time needed to charge for Gamma Wave.
- Increased damage for Gamma Tornado.
Iron Man
- Adjusted his air dash properties (start up is slower, but speed is faster).
- Removed double jump, jump attacks can be canceled with air dash.
- cr. H. can be canceled.
- Increased opponent's untechable time after a cr.H. hit.
- Increased hit box size of H. and j.S.
- Reduced minimum damage scaling on his normal attacks.
- Increased minimum damage scaling on his special attacks.
- Commands input during a Repulsor Blast are fixed on the direction he is facing
- Repulsor Spread command changed to pressing H. after Repulsor Blast.
- Repulsor Spread causes untechable knockdown.
- Smart Bomb damage increased.
- Decreased untechable time for opponents after a Smart Bomb hit.
- Total frames for a ground Smart Bomb have been decreased.
- Total frames for Flight are faster.
- Number of hits in Proton Cannon (ground and air ver.) can be increased through rapid buttons presses.
- Number of hits in Iron Avenger can be increased through rapid buttons presses.
Magneto
- Aerial forward tri-dash speed decreased slightly.
- H. no longer causes untechable knockdown.
- Total frames for L. and M. Electromagnetic Disruptor have been increased.
- Reduced opponent block stun from Electromagnetic Disruptor.
- Added new moves "Fatal Attraction," "Repulsion," and "Reverse Polarity."
- Removed invincibility from Magnetic Tempest.
- Number of hits in Magnetic Tempest (ground and air ver.) can be increased through rapid button presses.
- Number of hits in Gravity Squeeze can be increased through rapid button presses.
MODOK
- Jump attacks can be canceled by air dashes.
- Number of hits in Killer Illumination can be increased through rapid button presses.
Phoenix
- Health changed to 375,000.
- cr.M. range has been decreased slightly.
- TK Shot will disappear if Phoenix is hit.
- Phoenix is unable to perform additional actions after an Air TK Shot.
- TK Trap will disappear if Phoenix is hit.
Sentinel
- Health changed to 900,000.
- Changed S. Launcher properties from Hyper Armor to Super Armor.
- Opponent's untechable time after a Rocket Punch has been decreased.
- Push back from blocking Assist α from behind has been reversed.
- Number of hits in Plasma Storm can be increased through rapid button presses.
She-Hulk
- Changed to be a heavier character.
- cr.L. cannot be rapid fire canceled into itself.
- Reduced movement distance of cr.H. (slide).
- Added new move "Savage Swing".
- If no commands are input for a moment after Runner's Start, a Chariot with super armor properties can be activated.
- Torpedo from Runner's Start transitions faster.
- Clothesline from Runner's Start transitions faster.
- Opponent flies off further after being hit by Torpedo.
- Hitting an airborne opponent with Clothesline causes a wall bounce.
- Emerald Cannon causes you to move forward.
- Number of hits in Taking out the Trash can be increased through rotating the joystick.
Shuma-Gorath
- j.S. is now untechable, removed OTG property.
- For normal throws, not only health but Hyper Combo gauge is absorbed as well (decreases the opponent's and adds it to the player's side)
- Devitalization comes out faster.
- Number of hits in Chaos Dimension can be increased through rapid button presses.
- Number of hits in Hyper Mystic Smash can be increased through rapid button presses.
Spider-man
- Web Glide speed has been increased.
- Web Glide can OTG.
- Web Swing, Spider Sting, Web Ball can be canceled into Web Glide.
- Can activate air Web Swing from ground Web Swing.
- Web Throw is subject to damage scaling.
- The total frames for Crawler Assault have been decreased.
- Crawler Assalt causes untechable knockdown.
- Ultimate Web Throw attack direction has been changed to the side.
- Number of hits in Crawler Assault can be increased through rapid button presses.
- Number of hits in Ultimate Web Throw can be increased through rotating the joystick.
Storm
- Added new moves "Fair Wind" and "Foul Wind."
- Number of hits in Lightning Storm (ground and air ver.) can be increased through rapid button presses.
- Number of hits in Hail Storm (ground and air ver.) can be increased through rapid button presses.
- Number of hits in Elemental Rage can be increased through rapid button presses.
Super-Skrull
- Stone Dunk hit box has been increased.
- Orbital Grudge floats higher.
- Obrital Grudge super armor activates faster.
- Meteor Smash can be activated in the air.
- Death Penalty automatically brings you over the opponent.
- Number of hits in Inferno (ground and air ver.) can be increased through rapid button presses.
Taskmaster
- j.H. floats higher.
- Decreased minimum damage scaling on his normal attacks.
- Web Swing can be canceled.
- Charging Star causes opponent to fly to the side.
- Charging Star floats lower.
- Damage for Aim Master decreased.
- H. Aim Master floats lower.
- j.H. Aim Master floats lower.
- Added new move "Sting Master".
- Decreased minimum damage scaling on his Hyper Combos.
- Legion Arrow damage will properly scale in combos (total damage remains the same when used by itself).
- Number of hits in Legion Arrow (ground and air ver.) can be increased through rapid button presses.
Thor
- Reduced push back for M.
- Hit boxes of L., j.L., Mighty Spark (before the beam comes out), and Mighty Smash have been enlarged slightly.
- Increased minimum damage scaling on his normal attacks.
- Increased minimum damage scaling on his special attacks.
- Opponent's untechable time after Mighty Spark has been increased.
- Less time is needed to fully charge H. Mighty Smash.
- Total frames for Mighty Strike have been reduced.
- Less time is needed to fully charge Mighty Strike.
- Active throw frames of Mighty Hurricane have been increased for all strengths.
- Mighty Punish is invincible from the 1st frame.
- Increased advantage time of Mighty Punish.
- Active throw frames of Mighty Punish have been increased.
- Number of hits in Mighty Tornado (ground and air ver.) can be increased through rapid button presses.
Wolverine
- Dive Kick and j.L. hit box sizes have been reduced.
- Berserker Slash invincibility has been removed.
- Added new move "Berserker Rage" (formerly known as "Swiss Cheese")
- Berserker Charge command input priority changed to the lowest among Hyper Combos.
- Number of hits in Berserker Barrage X can be increased through rapid buttons presses.
- Number of hits in Fatal Claw (ground and air ver.) can be increased through rapid buttons presses.
- Number of hits in Weapon X can be increased through rapid buttons presses.
X-23
- Mid-air special attacks can be canceled into Talon Attack.
- Crescent Scythe floats higher.
- Decreased untechable time for opponents after a Crescent Scythe hit.
- Rage Trigger causes opponent to fly further to the side.
- Number of hits in Rage Trigger can be increased through rapid buttons presses.
I hope that carries over to the assist.
Normal Gustaf Fire being cancellable now is... odd? Only into specials, of can I now get standing H off it too? Because that'd be nice along with the "no-block-in-air-dash" universal nerf. 
