Apple has built in hooks for iPhone GPS features that aren’t possible with the current hardware, according to a third-party plug-in support for Aperture 2.1, Apple this week has released the Software Development Kit (500KB) for the photo management software.

The platform lets programmers write code that adds new features for editing and exporting images handled inside the program.

A number of extensions from outside companies have already been made available on Apple’s developer site for Aperture.