It contained the following updates:
- Allowed reordering of desktop spaces and full screen apps in Mission Control.
- Enabled dragging files between desktop spaces and full screen apps.
- Addressed an issue that may cause the menu bar to not appear in full screen apps.
- Improved the compatibility of Google contact syncing in Address Book.
- Addressed an issue that may cause Keynote to become temporarily unresponsive.
- Improved VoiceOver compatibility with Launchpad.
- Addressed an issue that may cause a delay in accessing the network after waking from sleep.
- Enabled booting into Lion Recovery from a locally connected Time Machine backup drive.
- Resolved an issue that causes screen zoom to stop working.
- Improved Active Directory and LDAP integration.
- Resolved an issue with Mail in which you may be unable to send through your MobileMe Mail account.
- Resolved an issue with Mail when searching.
- Addressed an issue that could cause iChat to prompt you for an account password which has already been saved.
- This update also included RAW image compatibility for additional digital cameras.
- Disk Image (.dmg) and installer packages (.pkg) were removed from the "safe" file types list.