A number of devices have iOS 12.3 installed

[chengtmskcc]

As far as I know, iOS 12.3 has yet to be released officially. Yet, in my environment, I have over 22 devices (mix of employee and corporate owned) with iOS 12.3 installed. Is anyone else seeing the same in his/her environment?

[RichB2u2]

We have two devices and they belong to some technicians that always like to test the next beta version. Anyone can sign up for an Apple Beta Software account and get the beta versions to test. https://beta.apple.com/sp/betaprogram/

[LukeDC]

Good old public betas:

https://www.macworld.com/article/3384739/ios-12-3-features-release-date-how-to-install-beta.html

[RajaniKanthSoud]

Users would have enrolled for Beta program and got their devices upgraded to 12.3 beta

[chengtmskcc]

Rich and Luke, thank you both for the info. I will probably create a compliance policy and separately educate users not to install Beta software on their corporate devices.

[Stansfield]

If you look in profiles you should be able to see the beta profile, if you block profile installation on supervised (which is highly advisable, not just for this) they will not be able to enroll in the beta

[chengtmskcc]

Thanks, Stephen. However, I only see it if the device is enrolled with Ownership: Corporate - Dedicated. None of the employee-owned devices show it.

' iOS 12 Beta Software Profile
Configures your iOS device for use with the Apple Beta Software Program.' 

[chengtmskcc]

Stephen, how do you block profile installation by the user?

[Stansfield]

Do you gather all profile data for personal devices in privacy settings?
restrictions profile - Allow manual profile installation requires supervision blocks the profile (only new ones not existing)