What's more, AT&T will also have Magic Leap One headsets in stores this fall, mostly as a way to demo WarnerMedia content with characters and scenes from the latest Warner Bros. movies.

AT&T will also launch a 5G test zone in Magic Leap's campus in Plantation, Florida so that developers can stress test the platform with upcoming 5G speeds. The company is also hosting a Spatial Computing Hackathon in San Francisco in November to get more content creators on Magic Leap.

John Donovan, AT&T's CEO, said on stage that he compares the Magic Leap exclusivity with the iPhone exclusivity back in 2007. The iPhone was similarly in untested territory, he said, that it was also something that you had to try to believe. "New and immersive experiences from Magic Leap's developers eventually riding on the AT&T mobile 5G network will redefine entertainment and productivity," said Donovan in a statement.