This is the WoW-184.108.40.20641-to-220.127.116.1199-enUS-patch.exe, the WoW 2.3.3 Patch. This is a very fast download.
* Some players may notice improved data load times when newly entering the world and after zoning into new areas.
* Character/NPC load times have been decreased, and now should appear faster. You’re not hearing voices, there really are people in Shattrath!
* Felspine the Greater in Shadowmoon Valley will no longer evade when engaged.
* Gutripper in Nagrand will no longer evade when engaged.
* Players will now be correctly credited with their arena points if they purchase an arena item during weekly arena calculations.
* Using a castsequence macro on a target moving out of range will no longer cause it to stop working.