Mail

• When changing the host name of an email account in settings, blank messages may be seen in the unified inbox. As a workaround, delete and re-add the account instead of changing its host name.

Music Player

• When deleting a song or video from Music/Videos on the device it crashes the app.

OpenGLES

• FIXED: After the lighting stage, whether lighting is enabled or not, the resulting color values are not clamped in GLKit/GLKEffects with either GLKLightingTypePerVertex or GLKLightingTypePerPixel set on the effect. As a result it is not uncommon to see differences in lighting between the two, especially when multiple lights are enabled. This differs from OpenGLES 1.1 which clamps color values after the lighting stage regardless of whether or not lighting is enabled.

OTA Software Update

• Users who installed iOS 5 beta 6 over the air from iOS 5 beta 3 must first erase all content and settings by choosing Settings > General > Reset > Erase All Content and Settings in order to install iOS 5 beta 7 over the air. This only impacts users who did not update to iOS 5 beta 4.
• If you are doing an OTA software update, you will need to re-sync your photos with iTunes.”
• FIXED: There may be some cases where purchases from the App Store or iTunes Store appear to be stalled because the device is downloading something else in the background. A workaround is to disconnect the device from power (unplug the device).
• NEW: If you have a passcode set, it must be removed before updating to seed 7 from previous seeds. It can be re-enabled after the update is complete. Failure to do so may require iMessage to be re-enabled in settings.

Reminders

• FIXED: If reminders syncing is enabled for a Yahoo account and there is no reminders collection on the server, it will continually get recreated by the phone. Due to a Yahoo server bug, that collection will show up as an event calendar.

Security

• In iOS 5.0 signing of certificates with MD5 signatures is not supported. Please ensure that certificates use signature algorithms based on SHA1 or SHA2.

Simulator

• Location services are not functional in iOS 4.3 simulator running on Mac OS 10.7 with Xcode 4.2.

Springboard

• Push and local notifications for apps appear in the new Notification Center in iOS 5. Notification Center displays notifications that are considered “unread.” In order to accommodate push and local notifications that have no “unread” status, developers can use their application badge count to trigger a clearing of notifications from Notification Center. When an application clears its badge count (by setting it to zero), iOS 5 will clear its notifications from Notification Center.