Updated on Nov 30: Added highlight for Billing.
Today we’re announcing the beta release of 
Google Ads API v0_6. This release brings you the features listed in 
Required Minimum Functionality (RMF). Now that the core functionality of this new API is available, you should get started planning, designing, and coding against it. With this version, you’ll continue pointing to v0 as your endpoint, however, you'll need to update your 
client libraries. Here are the highlights:
  - Manager account authentication: If you’re authenticating as a manager account, the manager account you want for authorization must be in the header as login-customer-id. You then set the customer you want to interact with in the request as usual. This tells the API the level of manager account hierarchy you want to authenticate with.
- Mix mutate operations: Pass in multiple kinds of operations with GoogleAdsService.Mutate.
- Billing: A new service is available to manage billing. The read-only PaymentsAccountService allows you to view a list of all payment accounts. Refer to the BillingSetupService to designate a payment account for a billing setup.
  
- Hotel Ads: We extended the GoogleAdsServiceto enable users to query hotel performance metrics that were previously available in the Travel Partner API with theHotelPerformanceView. Supported performance metrics are cost, clicks, impressions, and average lead values. Some derived metrics are also precomputed: average position, average cost per click, average cost per thousand impressions, and click-through rate. These metrics can be segmented by:
      - Itinerary segments: check-in date, check-in day of week, booking window days, and date selection type
- Hotel segments: hotel center ID, hotel ID, class, city, state, and country
- Date segments: hour, date, day of week, week, month, quarter, and year
- Others: campaign, ad group, ad network, and device
 
- Feeds: Manage and retrieve feeds with AdGroupFeedService,CustomerFeedService,FeedService,CampaignFeedService, andFeedMappingService.
- Account management:
    
      - We introduced CustomerClient, which provides the ability to get an expanded hierarchy of customer clients (both direct and indirect) for a given manager customer.
- This release also supports the creation of new customer clients under a manager using the CustomerService.CreateCustomerClientmethod.
- CustomerServicenow supports mutates.
 
- Recommendations: Added the DismissRecommendationmethod to theRecommendationService, making it possible to dismiss the recommendations listed in our guide.
- Ad formats: Gmail ads and image ads are now supported.
- Search query reporting: The SearchTermViewresource is now available, providing metrics aggregated at the search term level. SearchTermView provides functionality similar to the Search Query Performance Report of the AdWords API.
- Audiences: Create audiences using UserListService.
- Criteria types: You can now create criteria with CriterionTypeLANGUAGE,CARRIER,USER_LIST,USER_INTERESTandIP_BLOCK.
To get started with the API, review these helpful resources:
The updated 
client libraries and code examples will be published within the next 2 business days. If you have any questions or need help, please contact us via the 
forum.
 Nadine Sundquist, on behalf of the Google Ads API Team
 Nadine Sundquist, on behalf of the Google Ads API Team