iOS 6 Beta 4 Available for Developers to Download
iOS 6 beta 4 has been released for developers, the update comes as build 10A5376e and is available for all iOS 6 compatible hardware.
Registered developers can download the beta update through Over The Air, or login to the Apple Dev Center and get the IPSW directly from there. Alongside the fourth beta of iOS 6 is a new developer version of Xcode and a new dev release of Apple TV software.
Full release notes of the latest beta can be read on 9to5mac, which includes a list of changes, bug fixes, and minor new feature additions.