The screenshots are published by World of Apple and are taken of Mac OS X 10.6 build 10A261.
Put Back Trash
- you can now restore a file or folder you deleted to its original location
Stacks Folder Navigation
- you can now navigate through folders using the stacks feature
Keyboard Shortcuts Preference Pane
- the new keyboard shortcuts preference pane sees commands divided into categories which are shown at the left hand side of the window