The hero and item changes below are Valve's patch notes, word for word. Next to each hero is its win rate change since the patch. The 27 General and 13 Street Brawl changes are in the official post.

Setup Bishop
Rook Battery
Develop Queen
Still Life
Abstract Landscape
Threadsap
Granny Long Legs
Baba's Brew
Leech Therapy
Wretched Vapors
Healing Needles
Lurking Terrors
Traveler
Scrap Grenade
Rule, Ratannia!
Riposte
Flawless Advance
Itani Lo Sahn
Grasping Hands
Borrowed Decree
Serrated Knives
Bloodletting
Killing Blow
Chimera Mk1
Close The Deal
Alchemical Flask
Willpower
Last Stand
Power Slash
Flying Slash
Shadow Transformation
Charged Shot
Guided Owl
Frozen Shelter
Entangling Bola
Splatter
Goo Ball
Siphon Life
Shoulder Charge
Bloodscent
Eternal Night
Card Trick
Project Mind
Rising Ram
Blasted
Leaping Slash
Ava
Napalm
Concussive Combustion
Grapple
Death Slam
Mini Turret
Luggage Cart
Ira Domini
Shining Wonder
Smoke Bomb
Paradoxical Swap
Static Charge
Aura of Suffering