{
  "version": "15.7-preview",
  "assemblyVersion": "15.1",
  "buildNumberOffset": "20",
  "cloudBuild": {
    "buildNumber": {
      "enabled": true,
      "includeCommitId": {
        "where": "fourthVersionComponent"
      }
    }
  }
}

{
  "version": "15.7",
  "assemblyVersion": "15.1",
  "buildNumberOffset": "20",
  "cloudBuild": {
    "buildNumber": {
      "enabled": true,
      "includeCommitId": {
        "where": "fourthVersionComponent"
      }
    }
  }
}

Drop preview tag for 15.7 release
Drop preview tag for 15.7 release