New Skins in the Store

Frozen Terror Nocturne
Void Nocturne
Leprechaun Veigar
Battle Regalia Poppy

PVP.net v1.31.27

Made several usability improvements to the Join Custom Game screen
Private games are now hidden by default. There's a new checkbox to show them
Made improvements to the Login Queue UI
Login Music checkbox now saves correctly between sessions
The player list in the end of game screen will now correctly always show all of your teammates
The "View Profile" button in personal messages now works correctly
Fixed several bugs with viewing runepages when a match is found that was causing bad behavior

League of Legends v1.0.0.113

Nocturne, the Eternal Nightmare

Duskbringer: Nocturne throws a shadow blade which deals damage, leaves a Dusk Trail, and causes champions to leave a Dusk Trail. While on the trail, Nocturne ignores unit collision and has increased Movement Speed and Attack Damage.
Shroud of Darkness: Nocturne empowers his blades, passively gaining attack speed. Activating Shroud of Darkness allows Nocturne to fade into the shadows, creating a magical barrier which blocks a single enemy spell and doubles his passive attack speed if successful.
Unspeakable Horror: Nocturne plants a nightmare into his target's mind, dealing damage each second and fearing the target if they do not get out of range by the end of the duration.
Paranoia (Ultimate): Nocturne reduces the sight radius of all enemy champions and removes their ally vision in the process. He can then launch himself at a nearby enemy champion.
Umbra Blades (Passive): Every 10 seconds, Nocturne's next attack strikes surrounding enemies for physical damage and heals himself for each target hit. Nocturne's physical attacks reduce this cooldown by 1 second.

Akali

Adjusted Twin Disciplines to trigger at 9.5 AD and 19.5 AP to account for rounding

Anivia

Glacial Storm mana cost reduced to 75 at all ranks from 75/125/175
Updated all of Anivia's animations to be less frigid

Caitlyn

Headshot now requires 8/7/6 attacks to trigger at level 1/7/13 respectively from 8 attacks at all levels

Cho'Gath

Feral Scream damage reduced to 75/125/175/225/275 from 80/130/180/240/300
Vorpal Spikes
Damage increased to 20/35/50/65/80 from 20/30/40/50/60
Ability power ratio increased to .3 from .2
Feast
Damage reduced to 300/475/650 from 300/550/800.
Ability power ratio increased to .7 from .5
Carnivore mana received on kill has been reduced by 50%
Base health reduced to 520 from 550
Base armor reduced to 19 from 21

Evelynn

Fixed a bug where Hate Spike's tooltip showed the damage incorrectly at earlier ranks

Galio

Righteous Gust mana cost reduced to 70/75/80/85/90 from 80/85/90/95/100

Gragas

Barrel Roll damage reduced to 85/135/185/235/285 from 100/150/200/250/300
Drunken Rage mana restored while channeling reduced to 30/45/60/75/90 from 40/55/70/85/100

Irelia

Equilibrium Strike
Damage reduced to 80/130/180/230/280 from 80/135/190/245/300
Cooldown reduced to 8 seconds from 9
Ability ratio reduced to .5 from 1
Transcendent Blades damage reduced to 85/135/185 from 90/140/190
Base health reduced to 515 from 575
Movement speed reduced to 320 from 330

Jarvan IV

Golden Aegis' PVP.net description no longer states it triggers automatically

Kassadin

Force Pulse
Damage reduced to 60/115/170/225/280 from 60/120/180/240/300
Cooldown increased to 6 seconds from 5
Ability power ratio reduced to .7 from .8
Riftwalk ability power ratio increased to .5 from .4
Void Stone damage reduction reduced to 10% from 15%

Lux

Prismatic Barrier shield increased to 60/85/110/135/160 from 50/75/100/125/150
Finales Funkeln ability power ratio reduced to .75 from .85

Malphite

Granite Shield Increased the re-use time of your shield reactivating upon taking damage to 12 seconds from 8.
Ground Slam bonus damage based on armor decreased to 50% from 70%

Maokai

Arcane Smash damage increased to 70/115/160/205/250 from 50/95/140/185/230
Twisted Advance damage increased to 80/115/150/185/220 from 80/110/140/170/200
Sapling Toss lifetime increased to 35 from 25 seconds.
Vengeful Maelstrom
Casting delay reduced by 50%
Initial mana cost changed to a static 75 from 75/125/175
Continual mana cost changed to a static 30 from 30/35/40 per second

Mordekaiser

Fixed a bug where Mordekaiser's per-level health, armor, attack speed, damage, and magic resist were lower than intended

Singed

Armor per level decreased to 3.5 from 4.2

Sion

Death's Caress damage and shield reduced to 100/150/200/250/300 from 110/160/210/260/310
Base health reduced to 507 from 577
Base health regeneration decreased to 1.58 per 5 seconds from 1.62
Health regeneration per level reduced to 0.19 from .2

Sivir

Fixed a bug where Fleet of Foot had stopped working

Sona

Power Chord now deals 14 damage + 9 x lvl (from 24 + 12x bonus magic damage) in bonus magic and a bonus effect depending on Sona's last song played.
Hymn of Valor
Base damage reduced to 50/100/150/200/250 from 60/110/160/210/260
Ability power ratio increased to .7 from .5
Mana cost changed to 75 from 65/70/75/80/85
Power Chord - Stacatto: Deals double power chord damage
Aria of Perseverance
Base heal increased to 35/70/105/140/175 from 30/55/80/105/130
Ability power ratio reduced to .35 from .5
Mana cost normalized to 75 from 65/70/75/80/85
Power Chord - Diminuendo: Debuffs the target to deal 20% less damage for 3 seconds
Song of Celerity
Mana cost changed to 75 from 65/70/75/80/85
Power Chord - Tempo: Slows the target by 25% for 2 seconds
Crescendo
Cooldown decreased to 140/120/100 from 170/150/130
Ability power ratio increased to .8 from .7

Veigar

Added a funky new dance for Veigar - rock on!

Zilean

Time Bomb
Mana cost increased to 70/85/100/115/130 from 60/75/90/105/120
Base damage reduced to 90/145/200/260/320 from 100/155/210/270/330
Chrono Shift
Base revive increased to 600/850/1100 from 500/750/1000
Ability power ratio reduced to 2 from 3
Buff duration reduced to 7 from 10

Items

Banshee's Veil refresh time increased to 45 seconds from 30 seconds.
Doran's Blade
Fixed a bug where Doran's Blade was providing an unintended effect
Damage increased to 10 from 9

General

Experience
When more than 1 champion is sharing experience, 10% extra experience is split among all targets
Two champions each gain 55%, up from 50%
Three champions each gain 36.7%, up from 33.3%
Four champions each gain 27.5%, up from 25%
Five champions each gain 22%, up from 20%
Death timers increased slightly for levels 4-17
Minions
Cannon and super minion turret resistance returned to 50% from 65%
Minions now deal 50% damage to turrets from 60%
Cannon minions now start spawning every other wave after every 35 minutes, increased from 20
Effects that prevent you from dying will now always occur in a set order
Undying Rage
Chronoshift
Guardian Angel
Rebirth