In iOS 9, Apple is blocking insecure HTTP connections for apps, unless specific hosts are whitelisted.
http://ste.vn/2015/06/10/configuring-app-transport-security-io
I have inserted the following in my apps .plist per the Apple Guidance:
NSAppTransportSecurity
NSAllowsArbitraryLoads
and when I try to load my webView (from an HTTPS server no less), I get the following error and it doesn't load.
NSURLSession/NSURLConnection HTTP load failed (kCFStreamErrorDomainSSL, -9813)
So I it looks like not only are they not exempt, they don't work even if you make the correct addition to the .plist.