The debut ofCBS Mornings Pluswill be on Sept. 30, with the 9 a.m.

ET broadcast featured on stations in Los Angeles, Chicago, San Francisco, Detroit and Miami.

This is the first expansion of the CBS morning show to a third hour.

Tony Dokoupil and Adriana Diaz CBS Mornings Plus set

Tony Dokoupil and Adriana DiazCBS News

NBCsTodayexpanded to three hours in 2000, and later added a fourth.

ABCsGood Morning Americaadded the noontimeGMA3in 2018.

On cable, MSNBCsMorning Joeexpanded into the 9 a.m.

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ET hour in 2022.

Diaz has anchored the Saturday edition ofCBS Weekend News.

Watch on Deadline

The third hour will be produced by theCBS Morningsteam.

Shawna Thomas is the executive producer.