Yesterday Apple released the next major update for OS X Leopard, 10.5.6. I’ve installed it on both of my Macs and had no troubles. In addition to security updates and bug fixes, this release significantly speeds up the process of MobileMe syncing. I now get appointments on my phone about a minute after than putting them in iCal. To be honest, the delay before (about 30 minutes) didn’t really bother me. Rob Griffiths gave an in-depth review of the changes over at Macworld. He even dug into the install file to find changes Apple didn’t mention in its release notes.