原贴内容及链接如下：
Supporting App Transport Security
December 21, 2016
App Transport Security (ATS), introduced in iOS 9 and OS X v10.11, improves user security and privacy by requiring apps to use secure network connections over HTTPS. At WWDC 2016 we announced that apps submitted to the App Store will be required to support ATS at the end of the year. To give you additional time to prepare, this deadline has been extended and we will provide another update when a new deadline is confirmed. Learn more about ATS.
原址地址：https://developer.apple.com/news/?id=12212016b
大致意思是推迟ATS限制的时间，本来是说2017年1月1号开始APP强制使用HTTPS（SSL）的。
