https://techcrunch.com/2024/02/27/splitscreen-brings-a-multi-monitor-setup-to-apples-vision-pro/

Out of the box, Apple’s Vision Pro doubles as a 4K Mac virtual display, allowing you to extend an existing Mac desktop to the device’s spatial computing environment. A new app called Splitscreen takes things a step further, by allowing you to add a second macOS display to your Vision Pro — even if it uses a different Apple ID.

Such an app could prove valuable for multitaskers who want to use more than one Mac computer with their Mac Virtual Display in the Vision Pro — for instance, one for work and one for personal use. With Splitscreen, you can effectively create the feeling of having a multiple monitor setup, but inside the VR/AR environment.