Scout
The Sandman and Wrap Assassin gain Firing Delay -10% upgrades
The Sandman loses Ball Marks Target upgrade due to having it at base, ball can have multiple targets Marked at a once
Soldier
The Gunboats, The Mantreads, and B.A.S.E. Jumper gain Ammo Recharge +5% upgrade
Pyro
Afterburn Time +25% upgrade affects lingering flame duration as well
Airblast Force +25% upgrade affects knockback to self as well
Airblast Delay -10% upgrade affects airblast pressure recharge as well
Flare Guns have their Firing Speed and Reload Speed upgrade consolidated into a single Firing Delay upgrade
The Phlogistinator gains Alt-Fire Delay -10% upgrade
Dragon’s Fury gains Repressurization Rate -10% upgrade - affects firing speed, alt-fire speed, and pressure recharge
Gas Passer Explode On Ignite upgrade reworked to increase damage by x10 per level
Demoman
Loch-n-Load loses Reload Delay -20% upgrade
Sticky Jumper gains +1 Armed Stickybomb upgrade
Ali Baba's Wee Booties and The Bootlegger gain Charge Turn Control +50% upgrade
Shield Leap ability is affected by Jump Height upgrade
B.A.S.E. Jumper gains Ammo Recharge +5% upgrade
Ullapool Caber gains Recharge Delay -15% upgrade
Heavy
Miniguns gain an Instant Rev-Down upgrade that allows for acting immediately from revving down
Engineer
The Wrangler gains +25 Health on Kill upgrade
Short Circuit gains Firing Delay -10% upgrade
Dispenser Radius +100% upgrade is tied to wrenches, is reduced to +2 levels for Southern Hospitality
Medic
Healing Mastery upgrade affects The Vaccinator uber bubble’s healing
The Vaccinator has +0.5 Seconds of Ubercharge upgrade that adds 0.5s per bubble
Sniper
Sniper Rifles gain Clip Size +50% upgrade
The Huntsman gains Charge Rate +25% upgrade
The Razorback, Darwin’s Danger Shield, and Cozy Camper gain Ammo Recharge +5% upgrade
Spy
Spy has increased money collection radius, similar to Scout, but only works while uncloaked and does not provide healing
Revolvers gain Damage +25% upgrade
Watches gain Damage Absorption +20% upgrade
Sappers gain Recharge Delay -15% upgrade