Kevin Lygo, managing director of ITV's media and entertainment division, said: "Daytime is a really important part of what we do, and these scheduling and production changes will enable us to continue to deliver a schedule providing viewers with the news, debate and discussion they love from the presenters they know and trust, as well as generating savings which will allow us to reinvest across the programme budget in other genres.
"These changes also allow us to consolidate our news operations and expand our national, international and regional news output and to build upon our proud history of trusted journalism at a time when our viewers need accurate, unbiased news coverage more than ever."
ITV Studios, which produces the channel's daytime shows, is consulting with its daytime teams about a proposal that would see its three editorially distinct shows - Lorraine, This Morning and Loose Women - produced by one team sharing resources and operations from 2026.
GMB will move across from ITV Studios to ITV News at ITN, bringing all its national news gathering into one hub.
Scottish presenter Kelly has fronted Lorraine since 2010. Ranvir Singh and Christine Lampard present the show when Kelly is off.
In February, ITV announced that soaps Coronation Street and Emmerdale would see their content cut by an hour a week between them from next year.
In the past few years, there has been a downturn in advertising revenue, part of a funding squeeze throughout the TV industry.