Laundry list of the changes from the support pdf:
+ Updated software changes provide improved security.
+ Improved battery life.
+ Manage Contacts more efficiently with updated contact details.
+ Instantly know the strength of your signal with improved
+ Connect to Visual Voicemail when Wi-Fi is enabled.
+ Easily move between Today view and Agenda view in the
+ Additional support for Backup AssistantSM PIN retrieval for new accounts.
+ Play Visual Voicemail messages through speakers when connected
to Bluetooth® car kit.
+ Keep track of music with organized Music Player application.
+ Updated People application to accommodate contacts with
+ Access Corporate Directory information on Microsoft® Exchange.
+ Save new contacts with “Save to People” option for Visual Voicemail.
+ Call a number back immediately from text messages.
+ Improved CityID application.