From wow.incgamers.com

Live date: 22/01/08 US .. 23/01/08 EU

General

• 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!

Bug Fixes

• Felspine the Greater in Shadowmoon Valley will no longer evade when engaged.
• Unknown creature: Guttripper 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.

Undocumented Changes

• Addons no longer cause the "action blocked" message to be displayed when using the "toggle interface" key while in combat. Source
• Activating Shadowform while performing an open/use/mount action will no longer disable Shadowform.