During testing in the Public Beta Environment, patch 1.0.0.137 was found to have several game breaking bugs, and the patch was delayed a week before being fixed and repackaged as 1.0.0.138.
Spirit of Dread: Hecarim deals magic damage to enemies for a short duration. Hecarim gains health equal to a percentage of any damage those enemies suffer.
Devastating Charge: Hecarim gains increasing movement speed for a short duration. His next attack knocks the target back and deals additional physical damage based on the distance he has traveled since activating the ability.
Onslaught of Shadows (Ultimate): Hecarim summons spectral riders and charges forward, dealing magic damage in a line. Hecarim creates a shockwave when he finishes his charge, dealing additional magic damage to nearby enemies, causing them to flee in terror.
Pyromania now works like other charged passives; activating a spell with the stun no longer builds a charge, but the number of charges required to energize reduced to 4 from 5.
Champions gain more experience for killing higher level champions (especially 2 or more levels) but less experience for killing lower levels.
Maximum bounty for killing a champion on a long killing streak increased to 600 from 500.
Experience split when two or more champions are present increased; situations with two or more champions splitting experience will now earn 30.4% more total experience than solo, up from 26.1%.
Health and mana regen rates are now displayed on your health and mana bars.
Minion health bar toggle is now bound to Ctrl+L by default (instead of L).
Monster regeneration sigils now restore up to 40 mana, from 30.
Added floating status text (for example "Snared!") to some spells that were missing it (like Cassiopeia'sPetrifying Gaze), and removed it from displacement effects that didn't need it (like Gragas'sExplosive Cask).
Fixed a bug where the enemy team would see several champions in their alternate form, while the player was controlling their original form (i.e. Nidalee, Anivia, Shyvana, etc.)
Fixed a bug where champions would become untargetable.
Fixed a bug where some players would experience a blank log-in page after patching.
Fixed a bug where players would see all champions as grayed out, while the banning process was occurring.
Fixed a bug where mastery pages would appear overly large on low resolution settings.
Fixed a bug where players could not edit mastery page names and apply mastery points in the same action.
Fixed a bug where visual effects continued on buffs, even after they had ended.
Fixed a bug where the player with the first ban in draft mode can only ban from his own set of champions.
Fixed a bug where champions would die in alternate forms and respawn in the same form (i.e. Cassiopeia, Kog'Maw).
Fixed a bug with draft mode champion select audio queue.
Fixed a bug with chat disconnecting.
Fixed a bug with Greater Quintessence of the Piercing Present to match Greater Quintessence of Insight.
Fixed a bug where swapping was unavailable for All Random custom games.
Fixed a bug where the incorrect summoner spells would display for some players
An undocumented hotfix was deployed on April 23rd, 2012. This hotfix was intended to introduce Gatekeeper Galio with its new spell effects and audio. RiotRara clarified that any other changes were not intended to be introduced into the live client and the changes were reverted on the 24th.[2]
Greater Quintessence of the Piercing Present: magic penetration increased to 2.18 from 1.89.