Have you tested Mac Os X 10.7 Lion
Changes in Developer Preview 3 for Mac OS X Lion include: "a new boot animation, new graphical elements in the Finder's toolbar, new desktop wallpapers and the Reading List, now enabled in Safari," MacStories reports. The Reading List feature, which allows a user to collect webpages and links to read later, was uncovered within earlier developer builds of Lion, but this is the first build where the feature is enabled.
Several changes including:
* New Reminders menu in iCal
* New next desktop button in Dashboard space
* New options when right-clicking (this appears to be buggy at this time)
* Compatibility to external displays has been improved( especially in Mission Control)
Developers also report that the update now includes a standalone application for the Mission Control feature. Previously, Mission Control could be activated via a multitouch gesture or keyboard shortcut.