Apple this morning has released OS X 10.10 Yosemite Developer Preview 5. The new update brings various performance improvements and bug fixes. The previous Developer Preview brought some minor user-interface enhancements and significant speed improvements. Apple also released iOS 8 beta 5. We’ll be updating this post live with new discoveries as they are made. You can send us what you find to tips@9to5mac.com. You can find what’s new in this developer preview, below:

– Also new Xcode, Server, and Configurator seeds.

Beta 5: The "swift" command line tool is updated for easier scripting, and ranges have been significantly updated. http://t.co/hc69F9G1r3 — Swift Language (@SwiftLang) August 4, 2014

– Various Swift programming languages improvements

– Calculator is more transparent than in the previous beta

– System Preferences top bar tweaked.

– Tweaked Volume Control, Brightness Control, and Dictation HUD-like popups.

– New Setting to show full URLs in Safari 8.0.

– White text in Calculator in Notification Center widget.

– Spotlight blur is enhanced.

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