The television news landscape is shifting even further, with Mediaworks dumping its 60-minute news format on Sunday nights.

TV3 has this morning confirmed it's cutting its Sunday night news bulletin back to half an hour from next month.

It's part of a review which has also cast a cloud over the future of Campbell Live.

Shortening the Sunday night news will allow current affairs show 3rd Degree to move from Wednesday, and screen at 6:30pm.

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As part of the move to Sunday, 3rd Degree will be renamed 3D Investigates.