Apple has released its fourth beta of iOS 8.3 to registered developers; it’s the second beta in the new iOS Public Beta program. This latest beta features a build number of 12F61 and details few changes in the release notes from the prior beta, with minor issues related to CarPlay, WatchKit, Spotlight and UIKit. As with the third beta released earlier this month, this latest update is once again accompanied by a new beta build of the Apple TV…