iOS 8 Beta 4 is now available for developers to download. iOS 8 was initially unveiled at last month’s Worldwide Developers Conference. The update is available for over-the-air downloads on devices already running on iOS 8. It is available for the following devices: iPhone 5s, iPhone 5c, iPhone 5, iPhone 4S, iPad Air, Retina iPad mini, iPad 4, iPad mini, iPad 3, iPad 2, and 5th generation iPod touch.

iOS 8

Latest beta update for iOS 8

This beta just came two weeks after the 3rd beta was released. This update includes fixes for CarPlay, CloudKit, FaceTime, Family Sharing, FindMyFriends, GameCenter, HealthKit, iCloud Drive, VoiceOverTouch, Sharing, Managed Configuration, AirPort Assistant, MapKit, Springboard UI Services, AccessibilityBundles, Music, Lock Screen, and more. There are many new features coming with IOS 8 and Apple needs to be ready before the official unveiling of the new generation mobile operating system and upcoming iPhone 6.

What fans can expect

Apple Inc. (NASDAQ:AAPL) fans can expect the iPhone 6 to come out sometime in September. It is predicted Apple will release two versions including a phablet-style smartphone to compete with Android competitors like Samsung and HTC. It’s also speculated Apple will unveil the iWatch around the same time. With the new HealthKit has a highlight of iOS 8, it would not be to surprising if Apple was fine tuning the product to fit both anticipated devices, especially if the smartwatch has syncing capabilities. Last week, there were rumors the iWatch was to be delayed until later. Apple has yet to confirm any rumors.

Today, Apple also released the OS X Yosemite Developer Preview 4.

iOS 8 is currently available exclusively to app developers as the company tries to finetune to product before unveiling it to the public. Apple usually releases at least for more beta versions before perfecting the mobile operating system for final release.