Download Warcraft 3 Frozen Throne 1.22a Update patch here!

Earlier this week, Blizzard released a patch for Warcraft 3, known to some of you as "the game before World of Warcraft" and the rest as "the client for playing Defense of the Ancients."
Patch 1.22a provides balance changes for the units, fixes some
technical issues and includes four new maps. You can update the game by
either logging onto Battle.net or by downloading the patches manually
(available from BigDownload).

PC (1.22a requires patch 1.21b for installation)

• 1.21b for W3
  
• 1.21b for W3: The Frozen Throne
• 1.22a for W3
• 1.22a for W3:TFT
  

Mac (1.21b not required)

• 1.22a for W3
• 1.22a for W3:TFT
  

Last month, Blizzard also patched Diablo 2. We've placed full patch notes after the break.

[Via BigDownload]

FEATURES

• There is now a replay auto-save feature in the options menu. Replays are automatically saved to the "replay" folder.
• The game is now automatically saved in the event of a potential disconnect. These saved games are placed in the "save" folder.
• Player
  color selection can now be limited by the number of players in the game
  using an option in the "Advanced Options" screen during game creation.
• Added an option to always show unit and building health bars.
• You
  can now enable and disable the display of minimap signals from players
  and other observers using chat commands: /showminimapsignals and
  /hideminimapsignals.
• Added a new in-game cheat "maxfps"
  to limit the maximum frame rate to the given number. Example: "maxfps
  30" will set the maximum frame rate to 30 FPS.

BALANCE CHANGES

HUMAN

• Scout Tower repair rate changed from 12 to 20.
• Knight
  damage increased: Attack cooldown changed from 1.50 to 1.40 and base
  damage increased from 25 to 28 (Average damage is 34).

UNDEAD

• Increased Ziggurat base armor from 1 to 5.
• Reduced the build time of the Necropolis from 120 to 100.

NIGHT ELF

• Reduce the Orb of venom poison duration from 10 seconds to 8 seconds.
• Increase the experience gain from Dryads from Level 2 (40xp) to Level 3 (60 xp).

FIXES

• The cooldown on unlimited usable items (example: the staff of preservation) now persists after the item is dropped or traded.
• A cooldown exploit with potions has been fixed.
• When you unburrow a Crypt Fiend, its auto-cast will no longer be toggled off.
• An exploit bug in which items could lose their cooldowns when transferred between heroes has been fixed.
• Fixed DotA-specific sound effects on Intel Macs.
• Fixed sound falloff on Intel Macs. Distant sounds should now still be audible.

MAPS

New maps from contest winners:

• (2)MeltingValley
• (2)RoadToStratholme
• (4)CentaurGrove
• (4)TidewaterGlades