Get-Latest365Version.ps1

    $getWmiObjectSplat = @{
        Query        = "SELECT LocalizedDisplayName FROM SMS_SoftwareUpdate WHERE LocalizedDisplayName LIKE 'Office 365 Client Update - $Channel%$Bitness%' AND IsDeployed = '1' AND IsLatest = '1'"
        ComputerName = $SMSProvider
        Namespace    = "root\sms\site_$SiteCode"
    }
    $365Patches = Get-WmiObject @getWmiObjectSplat | Select-Object -ExpandProperty LocalizedDisplayName
    if ($365Patches.Count -gt 0) {
        $Regex = "\(Build ([0-9]+\.[0-9]+)\)"
        [double[]]$Builds = foreach ($Value in $365Patches) {
            [regex]::Match($Value, $Regex).Groups[1].Value
        }
        $LatestBuild = ($Builds | Sort-Object | Select-Object -Last 1).ToString()
        $FullBuildNumber = [string]::Format('16.0.{0}', $LatestBuild)
        Write-Output "Identified O365 [Version=$FullBuildNumber] as the latest deployed version for [Channel=$Channel] - This value will be used to update all XML"
    }
    else {
        Write-Error -Message "Failed to identify Office 365 version based on the input. This likely means you are not deploying updates for the specified architecture and update channel." -ErrorAction Stop
    }