Apple in the past 48 hours has provided its developer community with a wealth of new pre-release software, including the first external builds of both Mac OS X 10.6 Snow Leopard and Safari 4, as well as a fresh build of iPhone Software v2.0.

Separately, developers attending WWDC 2008 were provided with a physical Mac OS X 10.6 Snow Leopard installation disc, pictured below, containing the first build of the next-generation operating system to leave Apple's corporate boundaries.

Apple seeds iPhone build 5A331, OS X 10.6 build 10A96, Safari 4