Coinciding with the release of iPhone Software 2.2 for the iPhone, iPhone 3G, and iPod touch, Apple has released an updated version of its iPhone Software Development Kit for the new software. Listed as build 9M2621, the updated SDK weighs in at 1.56GB and requires Mac OS X 10.5.5. iPhone SDK for iPhone OS 2.2 is available now as a free download for registered developers from the iPhone Dev Center.
Apple updates iPhone SDK for OS 2.2

Charles Starrett
Charles Starrett was a senior editor at iLounge. He's been covering the iPod, iPhone, and iPad since their inception. He has written numerous articles and reviews, and his work has been featured in multiple publications.