Apple has just seeded the fourth beta of iOS 6.1 to registered iOS developers, which is currently available as an over-the-air download for users who already have a previous iOS 6.1 beta on their device. The release follows two weeks after seeding iOS 6.1 Beta 3, which was issued on December 3rd.
A new preview of Xcode 4.6, and a new Apple TV beta are also available from Apple’s iOS Developer Portal. Let us know if you spot any significant difference – we’ll do the same!