In this session at 21:06, a new section for App Store Server Notification urls is shown with the new option to specify a Sandbox URL as well as a Production URL. Shortly after that point in the video it is mentioned that "these changes" are rolling out later this year.
My question is whether "these changes" includes this new configuration option to specify a Sandbox URL.
If so, can we get any more specific about when "later this year" is?
If not, I'm not seeing those changes now, so when will they be rolled out?