In order to let you track Engaged Views (EVs), we have added ENGAGED_VIEWS to the list of acceptable values for the metrics property of the Analytics API. You can use this value in the following APIs.
For the CreateCampaign API, we always create an AdGroup along with the Campaign. However, we didn't include the created AdGroup in the response. From this change, you can now check the created AdGroup in the response with the field named ad_groups.