The 2.1.3 patch notes are available on the PTR forum. The full notes are listed below.
World of Warcraft Client Patch 2.1.3
The latest patch notes can always be found at http://www.worldofwarcraft.com/patchnotes/
- The Warlock spell Incinerate has had the performance of its graphical spell effect improved.
- The “show launcher” option has changed so that it now defaults to “on”. Players will now see the launcher when running WOW by default.
- Improved the performance of conditional macros, slightly increasing the framerate.
- Fixed a crash triggered by many unit frame AddOns.
- Fixed an issue with the movement of Archimonde's Doomfire.
- Fixed the wand missile art on most Shadow based wands to show the correct graphical effect.
- Infinity Blades will now despawn properly when the encounter with Kael'thas resets after a wipe.
- Gan'arg Underlings and Felhound Defenders are now properly classified as demons.