The forthcoming WarnerMedia streaming service will be partially supported by ads

In November, AT&T opened up about its plans for its forthcoming WarnerMedia streaming service, which aims to leverage the entertainment properties AT&T gained by way of its Time Warner acquisition last year. The company said the service will have three tiers — an entry-level, movie-focused service; a premium tier with original programming and blockbusters; and a bundle that includes them both. Today, AT&T revealed another detail: Some of the service’s content will be