Warcraft 1.26 Patch is now officially released. This is new hotfix update shortly released after Warcraft 1.25b Patch. It brings some tweaks to Hex mechanics and fixes a major disconnection issue with Mac while playing on Battle.net realms. Updating to Warcraft 3 TFT 1.26 patch is necessary as it fixes some DotA mechanics.
 
How to install Warcraft 3 1.26 Patch

• Use Warcraft 1.26 Switcher to upgrade. (Warcraft Version Switcher)
• Use Warcraft 1.26 Patch offline upgrade file from Blizzard. (Recommended)
• Install Warcraft 3 TFT 1.26 Patch via Battle.net automatic update. (Requires original Warcraft 3 CD-Key)

Warcraft 3 TFT/ROC 1.26 Patch Notes:
          Fixes:

• Hex will no longer provide a speed boost to a Hero if cast at the end of Metamorphosis or Chemical Rage effects.
• Reverted the 1.25b fix, "Hex will no longer extend the duration of Metamorphosis."
• Fixed an issue where some Mac patches could lead to disconnections during Battle.net games.

Common Issues/Notes:

• If you are receiving "Warcraft/InstallPath" error while installing War3 1.26 Patch, Read this guide.
• You can use Warcraft Version Switcher 1.26 easy upgrade, if you have v1.25b previously installed.
• Older Warcraft 3 replays won't work in this update.
• Version 1.26a is 1.26.0.6401