We're happy to announce that 
v201811 of the Google Ad Manager API is available starting today. This version brings support for date range targeting which affords the same functionality as blackout periods in the UI. It also removes the 
deprecated ContentMetadataKeyHierarchyService. For video targeting, use 
ContentBundles or key-values mapped from content metadata.
For a full list of API changes in v201811, see the 
release notes.
For questions about this or any other API changes, reach out to us on the 
Ad Manager API forum.
 - Chris Seeley, Ad Manager API Team
 - Chris Seeley, Ad Manager API Team