March 30, 2012 – 1.1

• Greatly improved robustness to backing store corruption/correctness
• Groundwork for Opt-Out application interface
• Additional API for Opt-Out query and background identifier derivation
• Support for unlimited number of installed SecureUDID applications
• Renamed API to de-emphasize the notion of a salt
• Improved detection of backup/restore

March 27, 2012 – 1.0

• Per-Owner dictionary implementation to support Opt-Out functionality
• Addressed an issue that could result in pasteboard overwriting

March 26, 2012 – 0.9

• First public release