VisionOS

realityOS has been identified as an internal project at Apple Inc. It is believed to be in development to provide an operating system for an as-yet unannounced AR / VR device.

Development history
Work on a project known as "rOS" for a forthcoming headset codenamed T288 had been reported as early as November 2017, after ARKit had been publicly released with iOS 11. An early headset prototype was based on existing iPhone components. The continued existence of the project had been revealed again in February 2022 with references to "realityOS" discovered in App Store upload logs. It had also been discovered in open source code posted to by Apple.