Calendar

• All MobileMe calendars were duplicated after turning calendar syncing off and back on.
• FIXED: Restoring from a Seed 1 backup or earlier will cause MobileMe/iCloud calendars not to sync. Subscribed calendars will show up in Calendars but none of your event calendars will appear in MobileCal. To workaround the problem please remove and re-add the account.
• If SnowLeopard isn't syncing your calendars on iOS device and you created a calendar or reminders list using a previous iOS 5.0 seed, change the name of that calendar or list on the iOS device and then let it sync.
• In this beta Birthday calendar is temporarily disabled for Web apps and Windows and will be available in a future release.

Contacts

• NEW:In MobileMe local contacts are deleted instead of be being merged.
• In this beta Import/Export vCard is disabled from Action menu and will be available in future release.

GameKit

• Match data for turn based matches is currently limited to 4 KB of data.
• When both Wifi and 3G are disabled (i.e. in Airplane mode) sometimes GameKit can cause the connection in a local Bluetooth match to fail.

iBooks

• iBooks 1.2.2 may fail to display some text or images in books. Please update to iBooks 1.3 in the App Store.

iCloud Backup

• As this is beta software, it is recommended that you do not use the iCloud services to store any critical data or information. If you enable iCloud Backup, automatic backup with iTunes when syncing will be disabled. We suggest you also manually back up your device with iTunes. It is strongly advised you upgrade to this version of the iOS 5 beta in order to continue backing up your devices and preserve previous backups.