This table describes the changes to iOS Technology Overview.
| Date | Notes |
|---|---|
| 2010-07-08 | Changed the title from "iPhone OS Technology Overview." |
| 2010-06-04 | Updated to reflect features available in iOS 4.0. |
| 2009-10-19 | Added links to reference documentation in framework appendix. |
| 2009-05-27 | Updated for iOS 3.0. |
| 2008-10-15 | New document that introduces iOS and its technologies. |
Last updated: 2010-07-08