| Date | Notes |
|---|
| 2006-12-20 | Added a "Cocoa API Conventions" section to "Adding Behavior to Your Cocoa Program." |
| 2006-10-03 | Clarified the statement about reinitialization of objects and made minor corrections. |
| 2006-08-07 | Corrected several minor errors. |
| 2006-05-23 | Added description of represented objects and updated examples and descriptions of singleton objects and object copying. |
| 2006-03-08 | A new document that gives developers an orientation to the basic concepts, terminology, architectures, and design patterns of Cocoa. |
| | The now-retired documents consolidated as chapters in this document are "What Is Cocoa?," "Cocoa Objects," "Adding Behavior to a Cocoa Program," "Cocoa Design Patterns," and "Communicating With Objects." Two new chapters have been added: “The Core Application Architecture” and “Other Cocoa Architectures”. In addition, the discussion of the Model-View-Controller design pattern in “Cocoa Design Patterns” has been greatly expanded. |