First off, these days all Apples come with complete Developer tools (IDE, compiler, Interface Builder) and API documentation. It is on an extra CD/DVD and requires installation, but it is free.
Apple has what is called the Apple Developer Connection (ADC). The basic level is free and provides updates to the developer tools and documentation. The next level costs money ($500/year), and provides seed copies of upcoming OS releases, allows you to buy some hardware at a reduced rate, and includes some developer support incidents. Then there is a corporate level, gets you more support incidents, more hardware credits etc.
Apple has what is called the Apple Developer Connection (ADC). The basic level is free and provides updates to the developer tools and documentation. The next level costs money ($500/year), and provides seed copies of upcoming OS releases, allows you to buy some hardware at a reduced rate, and includes some developer support incidents. Then there is a corporate level, gets you more support incidents, more hardware credits etc.




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