The new update provides Apple's usual "improvements and bug fixes" including the ability to cancel scheduled or in-progress operations.
What's newApple Configurator is a free download from the Mac App Store. [Direct Link]
Apple Configurator 1.3 contains improvements and bug fixes including:
• Significantly improved reliability, scalability and performance
• A new status view that includes time estimates and error information with recovery suggestions
• Ability to cancel scheduled or in-progress operations
• Administrators can install apps on devices configured to not allow users to install apps