Office 365: How to get the list of First Release Users in PowerShell!

If you have configured selective First Release in your Office 365 tenant, you can easily get the list of First Release Users by means of the following PowerShell script:

https://gallery.technet.microsoft.com/How-to-get-First-Relase-db0ee3e0

############################################################################################################################################
# Script that allows to list of users to whom First Release has been configured in an Office 365 Tenant
# Required Parameters:
#  -> $sUserName: User Name to connect to Office 365.
#  -> $sMessage: Message to show in the user credentials prompt.
#  -> $sOutputFile: CSV File with the First Release Users exported.
############################################################################################################################################

$host.Runspace.ThreadOptions = "ReuseThread"

#Definition of the function that allows to export users configured in First Release
function Get-FirstReleaseUsers
{
    param ($sOutputFile)
    try
    {    
        Write-Host "----------------------------------------------------------------------------"  -Foregroundcolor Green
        Write-Host "Getting all First Relase Users in Office 365" -Foregroundcolor Green
        Write-Host "----------------------------------------------------------------------------"  -Foregroundcolor Green
        
        $FirsReleaseUsers= Get-MsolUser | Where-Object { $_.ReleaseTrack -like "StagedRolloutOne"}|select Displayname,UserPrincipalName        
        $FirsReleaseUsers
        $FirsReleaseUsers | Export-csv -Path $sOutputFile -NoTypeInformation

    }
    catch [System.Exception]
    {
        Write-Host -ForegroundColor Red $_.Exception.ToString()   
    }    
}

$sUserName = "<O365Admin>@<O465Domain>.onmicrosoft.com"
#$sPassword = Read-Host -Prompt "Enter your password: " -AsSecureString 
$sPassword=ConvertTo-SecureString "<User_Password>" -asplaintext -force
$msolcred = Get-Credential -UserName $sUserName -Message $sMessage
Connect-MsolService -Credential $msolcred

$ScriptDir = Split-Path -parent $MyInvocation.MyCommand.Path
$sOutputFile = $ScriptDir+ "\PS_FirstRelaseUsers.csv"

Get-FirstReleaseUsers -sOutputFile $sOutputFile

Referencia:

• https://techcommunity.microsoft.com/t5/Change-Alerts/List-of-First-Release-users/m-p/28310#M354