I'm not sure if it's just my setup, but after installing the Xcode 15 release candidate (Version 15.0 (15A240d)), I can't seem to run my iPad app in the visionOS simulator as I had in the betas. The visionOS "platform" is no longer available to download.
Has the process for getting the visionOS simulators changed?
This is expected, see the release note for Xcode RC
Xcode 15 Release Candidate enables you to develop, test, and distribute apps for all Apple platforms. You can download the platforms you would like to develop for directly from Xcode. For development with the visonOS 1 SDK, continue to use Xcode 15 beta 8.