Captain Falcon get up attack shield damage decreased from 10 to 8. Wouldn't be surprised if this turns out to be a global change, and this is what is different on (at least) everyone.
Falcon has a momentum change in side-b, and it does 9% instead of 8% ground and 8% instead of 7% air.
Get up Shield damage nerf is indeed universal.
No other changes to Falcon, no changes to DDD or Diddy.
Skipping around now.
Duck Hunt has no changes except for a element change on a windbox on (all 3) Can; no idea, didn't know this hitbox existed.
DK has a few changes.
Sorry, the Falcon change is only on custom #3.
No changes to Falco. Fox's throw lasers do 1.5 damage from 2.0. *shrug*
No changes to G&W. Ganon's nair was re-made. Very complicated change, tons of all new hitboxes. Coming back to this. It's the only Ganon change.
Greninja has 2 0.66x frame speed multipliers added to subactions that previous had no code. (So not attacks or such) It's currently impossible for me to tell what these might be, other than that they must be something obscure. No other changes.
Edit: Ike has multiple changes. Coming back to him later. So does Kirby.
Bowser nair does 6% per hit instead of 5%. He also had a 1.2x frame speed multiplier on some random state with no other codes removed. No other changes.
I LIED. Bowser Fireball custom was buffed. First hitbox 5 -> 6%, bkb 25 -> 35, size 4 ->5, decays to weaker hitbox after 20 frames instead of 15, weaker hitbox 3.5% -> 5%, size 3.5 -> 5.0. No changes to any other Bowser anything.
Bowser Jr. Down smash does 10 Shield damage, up from 1. His Jab 2 has a frame speed multiplier changed so that itends after 26 frames instead of 40. Wowsers.
Link has a ton of changes. skipping.
Little mac has a few that will take some time to parse. skipping.
Charizard has a huge speed buff to down-b custom #2? Am I reading this right?
Lucario down-b 2 hitbox angle changed from 58 to 65. Ends 7 frames sooner too. No other changes.
No changes to Lucas.
Lucina Shield Breaker Shield damage decreased from 30 to 25. (Will check marth soon...) No other changes.
Wow, Luigi has a ton of changes. Skipping.
Nothing on Mario, but Doc has a few.
Doc down-b custom 3 buffed from 8% to 10% or 12% depending on the hitbox; the 12% hitbox is also bigger and has knockback adjustments.
No other doc changes.
Marth also had shield breaker nerfed from 30 shield damage bonus to 25. No other changes.
Meta knight custom up-b 3 final hitbox is increased in size from 7.0 to 7.2 and lasts 2 frames longer. No other changes.
No changes to Mewtwo or Miis.
No changes to Villager or Ness, except for a change to Ness's PK Fire 3. It now does 2% on hit and 9% on trigger, from 1%/8%. The trigger hitbox hits sooner, and is smaller but closer.
No changes to Pac-man or palutena. Peach has one, brb.
STOP TRYING TO REORDER THE ALPHABET PEOPLE.
No changes for Peach besides some random frame speed multipliers and bits on non-attack moves that I have no idea what they mean. (These changes normally aren't stuff anyone would be interested in.)
No changes to Jigglypuff--random bit was changed at the end of custom down-b 3, unimportant.
Fully charged Shield break wasn't changed.
Robin has a lot of random bit changes and some interesting frame speed multiplier changes, but nothing directly on attacks or hitboxes. I doubt it's a change to charge up speed, but it's possible and deserves investigation. Nosfertu could be it too, but it's probably something unimportant.
I see no dash attack change.
Edit: confirmed no robin dash attack change.
No changes to Pikachu, Olimar, Pit, or Dark Pit. Dark Pit has a super random float changed on a throw, but it's likely just some animation thing, no idea.
Mega Man neutral B 2 ends 5 frames faster. MM side b 2 ends 6 frames faster. No other changes.
Mega Man neutral B 2 ends 5 frames faster. MM side b 2 ends 6 frames faster. No other changes.
Rosalina down-b 3 is 1 frame faster, technically 1.5. Rosalina side b 2 ends significantly faster. Rosalina Rapid jab damage from 2.0 to 1.7 I THINK; not sure, no idea what other repeating frame-1-subroutine Magic 2% hitbox Rosalina had.
No other Rosalina changes, but I see a couple big Luma changes. I don't know Luma's frame data well enough to tell what's what quickly, will come back to it.
Nothing on Roy or Ryu. A few meaningful changes on Samus, will come back to her.
But in case I forget, Samus fully charged neutral B 3 now does 20% from 18%, and 32 from 35, bkb 70 from 65, size 8 from 10.
Partially charged does 6 from 5, angle 40 from 45, bkb 50 from 30, and size 2.5 from 4.0.
No other Samus projectile changes--will still come back to her core moveset, which does have a few.
Sheik has no changes except the same random throw param tweak that Dark Pit got.
Shulk down-b 2 angle 35 -> 32, kbg 84 -> 89 on one attack option, kbg 94 -> 99 on the other; no other shulk changes
Okay so Bowser Jr and Sonic have a different change to one of their 3 getup attacks.
Most people are 10 -> 8.
But, Bowser Jr. and Sonic have SD changed from 1 -> 10 on one of theirs, one of the two normal (non-banana) ones.
I misinterpretted this as a d-smash change to Bowser Jr, since it's a frame 22 move and iirc that's what Bowser jr d-smash is. My bad.
Wario has a minor frame speed multiplier adjustment on some random action, and a 1 frame faster startup on neutral b #3.
WFT had a random target restriction flag on the explosive hitboxes of down-b 2 removed. I have no idea what these flags were, since AFAIK it could hit both ground and aerial opponents...
No other WFT changes.
Yoshi up-b 2 ends 4 frames sooner. yoshi's ledge attack seesm to do 1 shield damage bonus instead of 0. No other changes.
No other changes to Sonic. No changes to ZSS. Toon Link only has a single change to custom up-b 2 on the ground--it has 6 hitboxes instead of 1, they all seem stronger than before, one of them does 11% instead of 10%.
Zelda up-b 2 window lasts 1 more frame and the move ends 6 frames sooner.
Zelda neutral b 3 starts up 2 frames faster on the windbox and 5 frames faster on the explosion. The windbox position is shifted very slightly.
Besides that same random throw tweak as Sheik and Dark Pit, Zelda's file is unchanged.