softwareupdate utility not listing… | Apple Developer Forums

softwareupdate utility not listing macOS 26 installer for a valid Apple Silicon machine

Given that I have enabled System Settings -> General -> Software Update -> Beta Updates -> macOS Tahoe 26 Developer Beta.

When I run the following command:

softwareupdate --list-full-installers

I'm not seeing macOS 26 within the resulting list:

➜ softwareupdate --list-full-installers
Finding available software
Software Update found the following full installers:
* Title: macOS Sequoia, Version: 15.5, Size: 15283299KiB, Build: 24F74, Deferred: NO
* Title: macOS Sequoia, Version: 15.4.1, Size: 15244333KiB, Build: 24E263, Deferred: NO
* Title: macOS Sequoia, Version: 15.4, Size: 15243957KiB, Build: 24E248, Deferred: NO
* Title: macOS Sequoia, Version: 15.3.2, Size: 14890483KiB, Build: 24D81, Deferred: NO
* Title: macOS Sequoia, Version: 15.3.1, Size: 14891477KiB, Build: 24D70, Deferred: NO
* Title: macOS Sonoma, Version: 14.7.6, Size: 13338327KiB, Build: 23H626, Deferred: NO
* Title: macOS Sonoma, Version: 14.7.5, Size: 13337289KiB, Build: 23H527, Deferred: NO
* Title: macOS Sonoma, Version: 14.7.4, Size: 13332546KiB, Build: 23H420, Deferred: NO
* Title: macOS Ventura, Version: 13.7.6, Size: 11910780KiB, Build: 22H625, Deferred: NO
* Title: macOS Ventura, Version: 13.7.5, Size: 11916960KiB, Build: 22H527, Deferred: NO
* Title: macOS Ventura, Version: 13.7.4, Size: 11915317KiB, Build: 22H420, Deferred: NO
* Title: macOS Monterey, Version: 12.7.4, Size: 12117810KiB, Build: 21H1123, Deferred: NO

Is there an issue with the softwareupdate utility?