Apple has released both OS X 10.10.4 and iOS 8.4 updates:

Apple Releases iOS 8.4 With Apple Music, Beats 1, and Revamped Music App
Apple Releases OS X 10.10.4 With 'Discoveryd' Process Removal

Apple Releases iOS 8.4 With Apple Music, Beats 1, and Revamped Music App

Apple today released iOS 8.4, the fourth major update to iOS 8. First seeded to developers in April, iOS 8.4 includes a newly revamped Music app and Apple's long-awaited on-demand streaming music service, Apple Music. iOS 8.4 is available immediately as an over-the-air download, and the new Apple Music service is located within the Music app. Apple Music will be available immediately after iOS 8.4 is installed, while the Beats 1 radio service will kick off at 9:00 a.m. Pacific Time. Introduced at the recent Worldwide Developers Conference, Apple Music is an on-demand streaming music service that's much like Apple's former Beats Music service. It allows users to listen to an unlimited amount of music for 9.99 per month or 14.99 for a family plan that supports up to 6 listeners.

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Apple Releases OS X 10.10.4 With 'Discoveryd' Process Removal

Apple today released OS X Yosemite 10.10.4, an under-the-hood update that introduces several bug fixes and performance improvements. Most notably, 10.10.4 includes the removal of the problematic Discoveryd process, which has caused multiple networking issues for some users in OS X Yosemite. The OS X 10.10.4 update can be downloaded through the Software Update mechanism in the Mac App Store. Unlike 10.10.3, which brought Yosemite's first outward-facing changes including the Photos for OS X app and new emoji features, OS X 10.10.4 is a behind-the-scenes update that focuses primarily on fixing bugs and introducing better performance through stability improvements.

Read full article @ MacRumors