While the latest software for OS X Lion isn't nearly as exciting as a couple of other updates that Apple released today, Lion users will find a few worthwhile improvements within the new OS X 10.7.5 update. Most importantly, the latest software introduces Gatekeeper, a security feature from Mountain Lion that makes it more difficult to inadvertently install malicious software. The update also brings improved WiFi reliability for the iMac (late 2009 and newer) and squashes a bug that'd caused Launchpad icons to become rearranged. You'll find an even greater number of fixes / improvements after the break, and it's also worth a mention that even Snow Leopard users have received a bit of love today in the form of a security update. Want to prove you're a good cat owner? Go ahead and check for new updates right away.
OS X 10.7.5 improvements / fixes
- Resolve an issue in which icons in Launchpad could get rearranged after a restart
- Improve Wi-Fi reliability for iMac (Late 2009 and newer)
- Resolve an issue using Spotlight to search an SMB server
- Improve compatibility connecting to Active Directory servers
- Address an issue playing audio when a MacBook Air (Mid 2012) is connected to a Thunderbolt display
- Improve Active Directory clients updating computer password and DNS records
- Correctly update the keychain when changing an 802.1X password
- Address an issue that could cause text input fields to appear black in some applications
- Preserve iCal events when migrating to Microsoft Exchange Server 2010
- Enforce managed preference based on a user's primary group
- Address an issue accessing secure websites when using a web proxy
- Improve compatibility with RSA token used to authenticate with 802.1X networks
- Improve compatibility with Centrify DirectControl authentication
- Enable automatically logging into an NIS account
- Support @icloud.com email addresses
- Resolve a video issue with some VGA projectors when connected to certain Mac notebooks
[Source: Engadget]