This update contains improvements and bug fixes, including:

Improves reliability of using HDR option for photos taken using the Lock Screen shortcut

Addresses bugs that could prevent the new iPad from switching between 2G and 3G networks

Fixes bugs that affected AirPlay video playback in some circumstances

Improved reliability for syncing Safari bookmarks and Reading List

Fixes an issue where 'Unable to purchase' alert could be displayed after successful purchase

For information on the security content of this update, please visit this website:

http://support.apple.com/kb/HT1222