Alchemist1 change

Greevil's Greed
- Stack duration reduced from 40 to 36
Every change in Dota 2 patch 7.28a, straight from Valve's official notes: 46 heroes, 0 items and 0 neutral items changed. Hero and item names link to their current stats.
Alchemist1 change
Greevil's Greed
Arc Warden3 changesTalents
Axe1 change
Counter Helix
Batrider1 change
Bounty Hunter1 change
Track
Broodmother1 change
Clinkz2 changes
Death Pact
Talents
Enigma1 changeTalents
Invoker1 change
Ice Wall
Juggernaut3 changes
Swiftslash

Blade Fury
Keeper of the Light4 changes
Illuminate

Chakra Magic

Solar Bind
Talents
Kunkka2 changes
Tidal Wave
Legion Commander2 changes
Duel
Leshrac1 change
Nihilism
Lifestealer4 changes
Ghoul Frenzy

Rage

Open Wounds
Lion1 change
Mana Drain
Lone Druid1 change
Savage Roar
Luna1 change
Lucent Beam
Lycan1 changeTalents
Mirana2 changesTalents
Monkey King1 change
Nature's Prophet1 change
Wrath of Nature
Nyx Assassin2 changes
Impale

Vendetta
Ogre Magi2 changes
Ignite
Omniknight1 change
Hammer of Purity
Outworld Devourer6 changes
Arcane Orb

Sanity's Eclipse
Talents
Phantom Assassin1 change
Phantom Strike
Phantom Lancer1 change
Spirit Lance
Pudge1 change
Dismember
Riki1 change
Rubick1 change
Arcane Supremacy
Shadow Shaman1 change
Shackles
Slark3 changes
Snapfire1 changeTalents
Sniper1 change
Concussive Grenade
Spirit Breaker2 changes
Templar Assassin1 change
Psionic Trap
Terrorblade2 changes
Demon Zeal
Timbersaw2 changes
Flamethrower
Tinker2 changes
Tusk2 changes
Vengeful Spirit4 changes
Wave of Terror

Vengeance Aura

Nether Swap
Viper1 change
Poison Attack
Visage1 change
Silent as the Grave
Wraith King1 change
Mortal Strike
Zeus1 change
Static Field
Source: official Dota 2 patch notes (dota2.com).