Shirt Pocket announced the immediate availability of SuperDuper! 2.1 on Thursday. The updated version of the data backup tool is now a Universal Binary application. Plus, it offers better AppleScript support, an improved interface, easier backup scheduling, a rewritten user guide, and more. SuperDuper! 2.1 is available at the Shirt Pocket Web site, and is priced at US$27.95. A free version with limited functionality is also available.