Hulu, until now primarily a rerun service for episodes of broadcast television shows, is working to create a more robust offering that would stream entire broadcast and cable channels to consumers for a monthly fee.

The still-unnamed service was described by three executives with direct knowledge of Hulu’s plans, who spoke on the condition of anonymity. Mike Hopkins, the chief executive of Hulu, may discuss the concept at Hulu’s presentation for advertisers on Wednesday.

Hulu is planning to introduce the service early next year. While exact pricing details are still being determined, the new service is expected to cost about $40 a month.

News of the service was reported earlier by The Wall Street Journal.

Hulu wants to offer what is known as a “skinny bundle” of broadcast and cable channels — in particular those operated by 21st Century Fox, the Walt Disney Company and Comcast’s NBCUniversal. Those three media companies co-own Hulu.