Source: Google Ads Developer Blog

• Expanded text ads. The AdWords API now supports creating these ads in production accounts. Previously, creation of ExpandedTextAds was only supported in test accounts.
• Greater transparency in quality score. To improve transparency, QualityScore in Keywords Performance and Criteria Performance will report a value of two dashes (--) when there aren’t enough impressions or clicks to accurately determine a keyword’s quality score. The HasQualityScore field introduced in v201605 will now return false for any row without a QualityScore. Finally, for criteria without a quality score, the qualityInfo attribute will no longer be returned by AdGroupCriterionService get and query requests.
• Price extensions. The new PriceFeedItem type allows you to showcase your services and range of products, along with their costs, with your mobile text ads. Read more about price extensions in this Inside AdWords blog post.
• Converted clicks is deprecated. ConvertedClicks and its related fields have been removed from all reports in favor of Conversions. Conversions is the ideal way to measure valuable actions, and most advertisers already use Conversions as their primary reporting and bidding metric. Conversions is more flexible and is capable of measuring behavior that spans multiple conversion events or multiple clicks. Check out the recent Inside AdWords blog post for more details.
• Platform bid modifiers. Bid modifiers specific to desktop and tablet have been added to the campaign and ad group performance reports. Also, managing bid modifiers for desktop and tablet is currently only available in test accounts, but we will be rolling it out to live accounts for all versions over the coming weeks.
• CustomerService.get is deprecated. The get method of CustomerService has been replaced with the more flexible getCustomers method. Check out our migration guide for details.

- Josh Radcliff on behalf of the AdWords API Team

Source: Google Ads Developer Blog

• Expanded Text Ads and responsive ads for Display. Support was added for creating the new ExpandedTextAd and ResponsiveDisplayAd ad types in test accounts. Give these new formats a try with your test accounts. This functionality will be made available for production accounts over the next few months.
• Campaign bid estimates by platform. Inclusion of campaign estimates by platform was added to TrafficEstimatorService. Check out the updated Estimating Traffic guide for more details.
• Bid modifiers for all platforms (test accounts only). Campaign and ad group bid modifiers for all platforms are now supported across all versions, but only in test accounts. Previously, platform bid modifiers were only supported for the HighEndMobile (30001) platform. This functionality will be made available for production accounts over the next few months, as mentioned in a recent Inside AdWords blog post.
• Improved reporting on quality score. The new HasQualityScore field lets you filter reporting rows based on the presence or absence of quality score data for each criterion. In addition, the QualityScore field will now have a value of '--' on rows where HasQualityScore = false. Previously, these rows had a QualityScore value of 6 for Search campaigns, and 0 (zero) for Display campaigns.
• Image dimensions in reports. The ImageCreativeImageHeight and ImageCreativeImageWidth fields were added to the Ad Performance report so you can retrieve image dimensions for all image ads without making multiple AdGroupAdService requests.

- Josh Radcliff on behalf of the AdWords API Team

Source: Google Ads Developer Blog

• Campaign drafts and experiments. A new suite of services in v201603 gives you more options and control over experimenting with your Search Network and Search Network with Display Select campaign experiments. Check out the new Campaign Drafts and Experiments guide for all the exciting details! If you're currently using ExperimentService to manage your experiments, we recommend migrating to the new suite of services so you can make the most of your experiments.
• More flexibility with Target CPA and Target Spend. Following the revamped workflow for automated bidding announcement last month, the TARGET_CPA and TARGET_SPEND (Maximize clicks) bidding strategies can be created either as portfolio strategies (to share across multiple campaigns) or as standard strategies (to use with only one campaign). In addition, portfolio TARGET_CPA bidding strategies now support different CPA targets for individual ad groups.
• Top content bid modifiers. The new PreferredContent criteria type allows you to set a bid modifier for top content on YouTube or the Google Display Network, and the new TOP_CONTENT_PERFORMANCE_REPORT lets you monitor your ad group's performance relative to those bid modifiers.
• Campaign mobile bid modifier simulations. DataService has new getCampaignCriterionBidLandscape and queryCampaignCriterionBidLandscape methods that will return bid simulations for campaign-level HighEndMobile Platform (ID 30001) bid modifiers.
• Universal app campaigns in reports. Reports now include data for Universal App Campaigns. You can identify these campaigns by looking for AdvertisingChannelType MULTI_CHANNEL or AdvertisingChannelSubType UNIVERSAL_APP_CAMPAIGN.
• Batch processing. BatchJobService now supports job cancellation in all versions of the API. MutateJobService has been removed in v201603, so be sure to check out the migration information if you have not yet transitioned to BatchJobService.
• Targeting extensions. Extension setting services now support setting campaign, ad group, keyword, and location targeting for each ExtensionFeedItem, as shown in the updated code examples.
• Reporting improvements. Ad group bid modifiers are now available via the new AdGroupMobileBidModifier field in the ADGROUP_PERFORMANCE_REPORT report. Null values will appear as two dashes (--) for String fields in all reports.

- Josh Radcliff on behalf of the AdWords API Team

Source: Google Ads Developer Blog

• Reporting improvements. Several new fields were added to the VIDEO_PERFORMANCE_REPORT. New quality score and first position bid fields were added to the CRITERIA_PERFORMANCE_REPORT and KEYWORDS_PERFORMANCE_REPORT, and a new PARENTAL_STATUS_PERFORMANCE_REPORT was added. See the reporting section of the release notes for the complete list of changes, including all fields removed or added in this release.
• Improved batch processing. The BatchJobService was improved to reduce latency when uploading operations for a job. Check out the updated Batch Processing guide for details.
• Managing customer accounts. You can now update the ManagedCustomer.name of accounts under your account manager using a SET operation.
• Advanced conversions. You can control whether the Conversions column and conversion-based bid strategies include cross-device conversions via the new optimizeOnEstimatedConversions attribute of Customer.conversionTrackingSettings.
• Enhanced CPC bidding. Setting the enhancedCpcEnabled attribute of a ManualCpcBiddingScheme is now supported in the API. Previously, this setting was read-only.
• Targeting. The new Parent criteria type is available for targeting and bidding according to a user's parental status on the Display Network. In addition, ConstantDataService now supports retrieving the lists of mobile app category and new smartphone user criteria.

- Josh Radcliff on behalf of the AdWords API Team.

Source: Google Ads Developer Blog