"We've pulled a few things from this patch either for more time or after reconsiderations. Pretty fun patch I'd say!
Numbers are definitely subject to further change
Also remember 12.8 is the MSI patch so no more changes coming for the pro game there" - https://twitter.com/RiotPhlox/status/1516539343124369408
Finishing up adding the rest of these.
>>> Champion Buffs <<<
Mordekaiser
- [P] Move Speed increased 3% >>> 3%/6%/9% at 1/6/11
Aatrox
- Changes removed from patch.
Vladimir
- Armor: 23 >>> 27
Poppy
- [W] cooldown decreased 24 - 16 >>> 20 - 12
- [R1] knockup increased 0.75 >>> 1 second
- [R2] missile speed increased 2000 >>> 2500
- [R2] knockback distance increased 2400 >>> 3400
- [R] channel refund 30 >>> 15 seconds
Sejuani
- [P] cooldown decreased from 12 >>> 12 - 6 seconds based on level
Fiddlesticks
- [W] healing against champions increased from 30% - 50% >>> 30% - 70% of damage dealt
Zoe
- [Q] Paddle Star! mana cost reduced from 50 - 70 >>> 40 - 60
- [R] Portal Jump mana cost reduced from 50 >>> 40
Kassadin
- [Q] Null Sphere base shield increased from 40 - 160 >>> 60 - 180
- [Q] Null Sphere shield AP ratio increased from 30% >>> 40%
Vel'Koz
- [Q] Plasma Fission AP ratio increased from 80% >>> 90%
- [W] Void Rift initial AP ratio increased from 15% >>> 20%
Xerath
- [E] Shocking Orb stun increased from .5 - 2 >>> .75 - 2.25 seconds
Sylas
- [R] Hijack CD reduced from 100 - 40 >>> 80 - 30 seconds
Ezreal
- [R] cooldown decreased from 120 >>> 120 - 90 seconds
Tristana
- AD per level increased 3.3 >>> 3.7
Jhin
- [W] CC Duration increased from 1-2 >>> 1.25 - 2.25 seconds
- [E] cooldown decreased from 28-16 >>> 24-14 seconds
- [W/E] damage is no longer reduced against monsters
Bard
- [P] Traveler's Call Meep base damage increased from 30 >>> 35
- [P] Traveler's Call Meep damage per 5 chimes increased from 12 >>> 14
Seraphine
- Changes removed from patch.
>>> Champion Nerfs <<<
Pyke
- Moved to a future patch to allow for the changes.
Soraka
- [W] heal decreased from 100-140 (+70% AP) >>> 100-210 (+65% AP)
Jinx
- Base health decreased from 610 >>> 560
Xayah
- [Q] Double Daggers damage decreased from 45-125 >>> 45-105
- [Q] Double Daggers cooldown increased from 10-6 >>> 10-8
>>> Champion Adjustments <<<
AP Kai'Sa
- [P] Second Skin missing health damage ratio increased from 2.5% per 100 AP >>> 5% per 100 AP
- [W] Void Seeker AP ratio decreased from 70% >>> 45%
- [R] Killer Instinct AP ratio increased from 75% >>> 100%
Swain
- See here.