Apple iOS 8.3 beta 1 download available for the registered iOS developers with included it is first beta for new version of Xcode and important upgrade to Swift many new features. But iOS 8.2 download also remains in a beta mode.
Apple released Xcode 6.3 beta with attached Swift version 1.2. Xcode used for developers to create apps for iPhone, iPad and iPod touch. Xcode 6.3 includes a new version of Swift language. It includes a number of new changes. The new Xcode attached with Swift version 1.2
So, if you’re registered developer, you can go ahead and install the iOS 8.3 beta right now or keep with iOS 8.2 beta 5
iOS 8.1.3 is the only available latest public iOS update for the iOS users. But unfortunately iOS 8.1.3 Jailbreak not available yet So if you want to Jailbreak your latest device, You have to downgrade your iOS 8.1.3 device to iOS 8.1.2 and Jailbreak iOS 8.1.2 using Windows or Mac Computer.