Mac OS X 10.5.5 has been released and is available via the Software Update function.

The release notes outline updates to Address Book, Disk Utility and Directory Utility, iCal, Mobile Me, Mail, and Time Machine. Other general fixes are included.

With Mac OS X 10.5.5 (9F9) seeded to developers, it’s only natural you’re wondering what fixes it puts in place. There are many, many fixes so far, but none appear to be that big, as there aren’t any huge issues with 10.5.4 as it stands. Currently the only known issue is Aperture related: Aperture is more »