The active application’s windows can now be displayed directly in the Switch menu, so that you can always quickly switch between the windows of the application you are using. To list the active application’s windows in the Switch menu, select the “Quickly access the active application windows” checkbox in the Menus pane.
On Macs with a 64-bit processor, the Quit and Switch menus can indicate 64-bit applications. To show whether running applications are 64-bit applications, select the “Mark 64-bit applications” checkbox in the Menus pane.
The Application Wizard contextual menu now appears both in the Finder and in Path Finder.
The iPhoto Library and Aperture Library submenus have been updated and display MobileMe gallery icons.
Several other minor interface improvements and fixes have been introduced.