I have read Apple developers forum for 4-5 hours, no one know exactly how will they do application review and what will happen with "old" app where ATS is turned off.
For now my apps are on app store without ATS enabled, but after end of December 2016, as ATS become mandatory for all apps, I don't think they will allow any application without ATS enabled (as I read today on Apple forum).
I have already switched my domains on HTTPS, but some third party services (web APIs) are out of my control.
So I need to know every possible options and solutions, before it's get to late.