SDK for IPhone
Apple has released the iPhone Developer Program which provides a complete and integrated process for developing, debugging, and distributing applications for iPhones and iPod touch platoform.The SDK comes complete with development resources, real-world testing on iPhone, and distribution on the App Store, you will have everything you need to go from code to the customer.
Go to http://developer.apple.com/iphone/program to find more details around this SDK program.
You can either download the Free iPhone SDK which include the Xcode IDE, Instruments, iPhone simulator, frameworks and samples, compilers, Shark analysis tool, and more. Or you can choose to enroll into the iPhone developers program at standard of enterprise program levels which will cost you from USD 99 to USD 299 in order to enroll.
However, you will need a Apple ID to do so, if you do not have that, you will have to go through the application registration to get enrolled. When done this, select the program you want to enroll into, and wait for Apple to approve you for this entry.
So now you can develop any type of application for the iPhone. Well, we have to wait and test the SDK to see how open it is, and what it gives developers in respect to tools to twist the most out of this gadget.
So, whether you are a games developer or you want to make business applications, you have the chance now to get on the train to do so.