Electronista is claiming that Apple has already begun seeding an early version of the iPhone SDK to select developers.
The kit is described as a "rough version" of the tools aimed at developers, to allow them to create native applications for the iPhone and iPod touch.
Electronista is unable to supply many details on the SDK but notes that it "somewhat resembles Google's OpenSocial in that it mediates between the programmer and the iPhone operating system."
The SDK is expected to be widely available in February 2008.