• Full Leopard support
• Can store a bootable backup side-by-side with a Time Machine backup on a single volume
• Can copy Time Machine backup volumes to other drive when you need more space (or want to back up your archived data)
• "Run Now" button for scheduled copies
• Automatic preservation of any custom icon on the destination volume
• Improved Spotlight handling
• Performance and other improvements

Of course, the new SuperDuper 2.5 still improves on the acclaimed original in many ways, including:

• The ability to easily schedule backups
• Additional imaging options
• More control over shutdown
• Better AppleScript support
• Hundreds of UI improvements
• Growl support
• And a completely rewritten, task-based User's Guide.

• Allows display to sleep during copy
• Scheduled copies work for Japanese locale/language settings
• Preliminary compatibility support for Leopard
• Improved scheduling for all users
• Addressed various other minor issues

• Can disable ACL copying in Advanced options
• The What's going to happen? section now says when the destination is an image
• No longer allows erroneous restarting/startup from an image
• Scheduling now works with multi-byte characters in volume names
• Scheduling now works under 10.3.x for Japanese language users
• Addressed various other minor issues

Of course, the new SuperDuper 2.1.3 still improves on the acclaimed original in many ways, including:

• The ability to easily schedule backups
• Additional imaging options
• More control over shutdown
• Better AppleScript support
• Hundreds of UI improvements
• Growl support

And a completely rewritten, task-based User's Guide.

• Growl support for manual and scheduled copies. (Existing scheduled copies must be deleted and re-created to get notifications.)
• The copy mode (e.g. Smart Update) is now displayed in the status view
• Corrected directory "cycle" recovery
• Improved ACL copy error handling
• Fixed crash caused by invalid Scripting Additions or Components