The Unofficial Apple Weblog reports that a pair of unrelated websites--AustinHeap.com [1] and Zibri's Blog [2]--have posted what is purportedly Apple's secret iPhone application SDK key, not scheduled for official release until sometime in February. The alleged key: 18 84 58 A6 D1 50 34 DF E3 86 F2 3B 61 D4 37 74.
For more on the iPhone leak:
-read this Unofficial Apple Weblog entry [3]
Related articles:
Apple working on third-party iPhone [4] applications?
Apple [5] at work on touch-screen PDA
Rumor: iPhone [6] upgrades imminent
Hacking your iPhone [7]: Windows users