A few hours ago, Apple released iOS 8.3 beta 1 to registered developers of the iOS Developer Program. this time differs from previous times because, there are two betas for separate iOS versions simultaneously available.

Apple has made a small hardware change in the newly released iOS 4.2.1 making the mute switch button used as a full-on mute switch to mute system sounds and notifications. However, some users are complaining about this change and wants to get the orientation lock back.