iOS 10 UI Kit for Adobe XD (by Facebook)
A few days ago Facebook released an iOS 10 UI kit for several design tools, including Adobe XD.
This free UI kit is a pretty impressive collection of UI mobile elements included in the latest iOS release, for iPhone. This can be extremely useful if you want to learn in detail how Apple designed its new OS, or if you just want to use some native elements in your design projects.
It can be downloaded for free from the Facebook.design website.