Looks as though the final release of the iPhone SDK is now available. Although there seems to be little fanfare with the transition from beta, this is a milestone none the less.
Ive downloaded and installed the SDK and have noticed a few minor changes, from fixes in Xcode to some updated documentation and examples.
Up to this point, anything that Ive written in regards to the iPhone has been around laying the foundation for learning to build iPhone applications, that is, information that is not specific to the iPhone SDK. Unfortunately, from comments to my original post here (to other resources on the net) even though the iPhone SDK is no longer in beta, the NDA still applies. Put another way, looks like the wait continues until I can post code examples, tips and tricks as it applies specifically to iPhone development.
On a related note, I will have to say that I am impressed with the developer related documentation that Apple has published for Cocoa to MVC to Xcode. In all my years of development, often times my experience has been that this is one areas that lacks, fortunately, not this time around.
I was having a discussion recently with a friend whom I am collaborating with to ramp up on iPhone programming. He made an interesting comment that the barrier of entry to iPhone development is pretty high. Its not that Objective-C is difficult to learn, or that the SDK or tools are lacking, its really more about the transition to Cocoa development in general. For example, with Google and Android, the potential developer audience is huge (there is no Java support on the iPhone).
Honestly, I think this is a good thing for those who take on this challenge. Assuming the iPhone continues to gain market share, and businesses and consumers begin migrate to custom applications created for the device (think Apples App Store), this can only be a good thing for those of us who are focused on building iPhone applications.