Apple has released the fourth beta version of iPhone OS 3.0 to developers, along with an updated version of the iPhone software development kit (SDK), and a pre-release version of iTunes 8.2, which is required to activate iPhone OS 3.0. It is currently unclear what changes might have been made to the SDK, OS, or iTunes with this release; however, legal language referring to Blu-Ray data from Gracenote has been spotted in iTunes, suggesting Apple is…
