Luis Abreu has published a fantastic roundup of the privacy changes in iOS 8 (via Dave Verwer):

The latest updates to iOS 8 and OS X Yosemite introduce some very welcomed changes to the way Security and Privacy is dealt with on these platforms and may serve as an inspiration for others.

I’ve gathered this information by watching over 17 hours of WWDC 2014 sessions and carefully reviewing, analyzing what was said, and writing a huge number of notes on Security, Privacy, UX and other areas which I will be publishing here in the coming weeks.

Even if you’re not an iOS developer, read through Luis’ post to understand the updates Apple introduced to make it easier to remain in control of your data and decide which apps can access your information. I had a lot of doubts about the Health app and HealthKit data, and Luis’ explanation helped.