-- Death Stone --
*/ Cooldown increased from 6 seconds to 8.

-- Dagon --
*/ Cooldown increased from 16/14/12/10/8 to 19/17/15/13/11.

-- Invoker --
*/ Daybreak is now a Self-Cast ability (like Cataclysm).
*/ Using Daybreak causes Sun Strike to go on a 60 seconds cooldown.
*/ Fixed Daybreak being a non-scepter ability.
*/ Fixed interactions with Spell Steal.

*/ Improved building targeting AI for the Horde.
*/ Added missing ability tooltip for Tinker's Rearm.

** Gameplay **
*/ Dire's inner towers (Surrounding the Ancient) will now require all previous towers to be destroyed for them to be vulnerable.
*/ Both Radiant and Dire buildings will now respect the invulnerability chain. (This might cause unpredictable creep behaviours, please report it if that happens)

** Bosses **
*/ Leshrac's Diabolic Edict cooldown increased from 1.2 to 2, armor reduced by 5.
*/ Archer Necronomicon has been replaced with a new boss: Jah'Rakal, the Troll Warlord.
*/ New model for the Skeleton boss.

** Items **
-- Observer Wards --
*/ Duration increased from 6 minutes to 12.

-- Cursed Rapier
*/ Cursed Rapier's curse damage now counts as health loss.
*/ Cursed Rapier's active now also reduces lifesteal by 50%.

-- Heaven's Halberd & Exalted --
*/ Both will now also provide Lifesteal amplification.

-- Eye of Skadi --
*/ Lifesteal reduction is now properly applied.

-- Vladmir's Cuirass --
*/ Bonus damage increased from 15% to 20%.
*/ Now also reduces enemy units' attack damage for half the value.
*/ Lifesteal is now affected by lifesteal amplifcation/reduction sources.
*/ Fixed units being able to lifesteal off of damage done through Cleave/Multi-Shot abilities.
*/ Improved description's readability.

• The remaining patch notes can be found here.

** Gameplay **

*/ Fixed bugs related to 7.27b.
*/ Slight nerf to the last wave.
*/ Slight buff to the last boss fight.

** Items **

*/ Boots of Travel 3 no longer shares cooldown with normal TPs.

** Heroes **

-- Bloodseeker --
*/ Rupture damage increased from 100%/150%/200% to 150%/225%/300%
*/ Blood Frenzy movement speed per stack increased from 1.5%/3%/4.5%/6% to 2%/4%/6%/8%
*/ Blood Frenzy attack speed per stack reduced from 6/10/14/18 to 4/8/12/16
*/ Blood Frenzy now also heals for 9%/12%/15%/18% of the killed unit's max health. (Only if Bloodseeker is the killer).

-- Clinkz --
*/ Restored Clinkz' talents. (Except kills restore Death Pact's CD)
*/ Skeleton Archers will now attack creeps.
*/ Some nerfs to the new Death Pact.

-- Drow Ranger --
*/ Reduced Multishot's damage from 110%/150%/190%/230% to 95%/135%/160%/190%.
*/ Increased Marksmanship proc chance from 1%/2%/3% to 20%/30%/40%

-- Morphling --
*/ Can now morph into allies without Aghanim's Scepter, cast range is included aswell.

-- Razor --
*/ Static Link cooldown increased from 8/6.4/4.8/3 to 9/7.5/6/4.5

-- Shadow Fiend --
*/ 7.27b's changes delayed until further testing.

-- Treant Protector --
*/ Rescaled Leech Seed's damage and damage rate, increased healing values from 7% to 50% of the damage.

*/ More nerfs to the last wave.
*/ Attribute Tomes will now apply to illusions.
*/ Increased Arcane Matter's & Mysterious Orb's 3rd drop chance from 25% to 50%.

*/ Some nerfs & minor changes to the last wave.

*/ Fixed Linken's buff -> Spell absorb interaction with Dagons and Necrophos' ultimate.

** Gameplay **
*/ Higher difficulties are slightly harder, and will spawn a larger (~25% per difficulty increment) amount of creeps.
*/ Applied 7.27 changes (with minor tweaks).

** The Horde **
*/ A new mini-boss for the Zombie/Golem/Spider waves.
*/ A new end game wave + final boss.
*/ Endless mode will spawn a different kind of Satyr Commander.
*/ Wild Beast has Entangle now.
*/ Replaced Ogre boss's Frost Armor with Lich's Frost Shield, will be used earlier. Ogre will also use his items. Armor Reduced by 6.

** Items **
*/ Reduced Quell damage on all Battle Fury variants, cleave percent is still the same.
*/ Some improvements to Boots of Travel 3 visuals.
*/ Mind Breaker & Prince's Knife Silence/Hex will work on creeps now.
*/ Slight rework to Orb of Venom.
*/ Improved Dragon Javelin's target handling, 1st level is cheaper and scales from 1 to 6 extra targets, the 6th upgrade applies attack modifiers every 8 hits.
*/ Vanilla Silver Edge restored, the new one is now exalted (and has been buffed accordingly).
*/ Hallowed Durandal's active now only ignores 70% of the armor.
*/ Removed Exalted Echo Sabre.
*/ Removed Sange & Yasha & Kaya.

• The remaining patch notes can be found here.

• Patch notes can be found here.