CNN is getting ready to launch a streaming service. Again.

Three years after CNN’s parent company killed the hotly anticipated (and very expensive) CNN+ service shortly after it was released, the news network will introduce a new streaming product this fall that packages live and on-demand programming.

Mark Thompson, the company’s chief executive, told employees about the service in a town-hall meeting on Tuesday afternoon. Some of the details about the service remain unclear, including pricing and an exact release date. But Mr. Thompson said the new service would be tied to the company’s recently introduced subscription product, which gives paying members unlimited access to articles posted on CNN.com.