Apple Releases iPhone OS 4 Beta 4 and SDK to Developers
New iPhone OS 4 wallpaper option (Source: forum post by nistromo)
Apple is keeping its developers busy today: Alongside a new build of Mac OS X 10.6.4, Apple has also released the fourth beta version of iPhone OS 4 and the associated s...
http://www.macrumors.com/2010/05/18/apple-releases-iphone-os-4-beta-4-and-sdk-to-developers/