Champions
Akali
* Fixed a display error with Twin Disciplines and death recap.
Alistar
* Unbreakable Will
o Corrected the tooltip: it removes all crowd control not all debuffs.
* Pulverize's tooltip corrected to not imply that enemies do not take damage until they land.
Amumu
* Curse of the Sad Mummy
o Corrected the debuff tooltip: it renders units unable to attack or move.
* Cursed Touch
o Magic Resistance Reduction reduced to 15/25/35 from 20/30/40.
Annie
* Corrected the buff tooltip on Molten Shield so it correctly implies that all attackers receive magic damage.
Cho'Gath
* Fixed a display error with Vorpal Spikes and death recap.
* Feral Scream
o Reduced the silence duration to 2/2.25/2.5/2.75/3 seconds from 2/2.5/3/3.5/4 seconds
o Reduced the cooldown duration to 14 seconds from 16 seconds
Corki
* Attack Range increased to 550 from 500.
* Gatling Gun
o Range increased to 850 from 750.
* Missile Barrage
o Reduced reload time to 10 from 14.
* Attack Speed Per Level increased to 2.3 from 1.86
Dr. Mundo
* Infected Cleaver
o Cost changed to 50/60/70/80/90 from 30/50/70/90/110
o Dr. Mundo is healed for half of the ability cost when the cleaver strikes a target.
* Burning Agony
o Cost lowered to 20/25/30/35/40 from 20/27.5/35/42.5/50
* Masochism
o Cost changed to 25/35/45/55/65 from 15/30/45/60/75
* Sadism
o Returns 40/55/70 percent of Mundo's health instead of 50/50/50.
Ezreal
* Base damage reduced to 45 from 47.6
* Damage Per Level reduced to 2.6 from 3
* Attack Speed Per Level reduced to 2.8 from 3.22
* Mystic Shot
o Mystic Shot damage reduced to 35/55/75/95/115 from 40/65/90/115/140
* Essence Flux
o Essence Flux damage reduced to 70/115/160/205/250 from 80/130/180/230/280
* Arcane Shift
o Arcane shift damage reduced to 65/110/155/200/245 from 75/125/175/225/275
Gangplank
* Fixed a display error with Grog Soaked Blade and death recap.
* Fixed a bug where Gangplank's passive would be replaced with the Grog Soaked Blade debuff text when struck by another Gangplank.
Gragas
* Fixed a display error with the tooltip on Barrel Roll's self buff.
Heimerdinger
* UPGRADE!!!
o Corrected the tooltip: the slow is actually 20/25/30 not 25/30/35.
Kassadin
* Nether Blade's level up tooltip correctly states the increased mana cost.
Karthus
* Wall of Pain's level up tooltip correctly states the increased slow amount.
Kayle
* Reckoning's debuff and death recap tooltips have had erroneous mentions of attack speed slows removed.
Kog'Maw
* Living Artillery's buff on Kog'Maw correctly states that the increased cost per stack is 40, rather than 50.
Malzahar
* Call of the Void
o Delay between cast and effects reduced to .25 seconds from .4 seconds.
o Cooldown reduced to 9 seconds from 10 seconds.
o Mana cost reduced to 80/88/96/104/112 from 90/100/110/120/130.
* Null Zone
o Mana cost reduced to 80/95/110/125/140 from 90/105/120/135/150.
o Null Zone no longer places a blank buff on Malzahar.
* Nether Grasp
o Now suppresses summoner spells in addition to stunning the target.
o Range increased to 750 from 650.
Master Yi
* Wuju Style tooltip simplified.
Nasus
* Fury of the Sands buff on Nasus no longer incorrectly states that it grants increased attack speed.
Nidalee
* Cougar form's tooltip correctly mentions the 10% bonus dodge chance Nidalee gains in Cougar Form.
* Corrected a display error with Takedown and death recap.
Pantheon
* Corrected a display error with Pantheon's auto attack and death recap.
Sivir
* Typos corrected in the level up tooltips for Spell Shield and Boomerang Blade.
Soraka
* Starcall
o Debuff placed now correctly states that it can stack up to 20x.
Tristana
* Rocket Jump
o Debuff placed now correctly states the slow amount.
Twitch
* Spray and Pray
o Buff no longer incorrectly states that he does reduced damage during Spray and Pray.
Veigar
* Fixed a typo in Event Horizon.
Warwick
* Blood Scent
o Blood Scent is now a toggle.
Items
* Sheen, Lich's Bane and Trinity Force's "reservoir" system removed. These items will now strictly respect the cooldown time between procs.
* Sheen, Lich's Bane and Trinity Force's cooldowns reduced to 2 second delays between procs from 3 seconds.
* Spirit Visage redesigned
o Comprised of Null-Magic Mantle, Ruby Crystal, and 375 recipe cost.
o 30 Magic Resist
o 200 Health
o UNIQUE Passive: Reduces ability cooldowns by 12% and increases your healing and regeneration effects on yourself by 20%.
General
* Hyper-Kinetic Position Reverser, Infinite Duress and Nether Grasp now properly suppress and stun their targets.
* Towers currently attacking a champion will not respond to further calls for help from other champions.
This is a preview. The update will most likely be released in the afternoon.