Hi,
I just received this in my email - In lieu of scheduling an appointment at a Global Entry Enrollment Center, you have the unique opportunity to interview for Global Entry when you return from your next international trip at one of several international airports in the United States and Canada.What is Enrollment on Arrival? With Enrollment on Arrival, Global Entry applicants who are conditionally approved can complete their interviews, the last step of the Global Entry process, while they are clearing through United States Customs and Border Protection or Preclearance. My appointment is scheduled on June 27th but will go with the Enrollment on Arrival. As per the information you do not have to schedule any interview from now on.

So another great initiative from CBP. Will report after the interview.