Guild Officer rank! Guild Admins can now promote individual members to Officers. Officers have the power to kick Members, as well as accept or reject private guild join requests, but can be demoted or kicked by Guild Admins.
New chat system! Resizable window in the bottom left of the screen that lets you always chat with your guildmates without having to go into a full screen window.
Party chat! Hit 'Y' to chat with people in your dungeon or your teammates in PvP arenas
Input fix: Left mouse button will now always move the player, instead of stopping you if you started dragging when your cursor was over a character.
Guild notifications about kicking, promoting, and inviting players will now show the guild member's name who caused the notification. For example, it will say who promoted people.
Local game preferences (sound volume, etc.) are now stored locally on a per-Steam-user basis.