New hosts slated to take over Today show after departures of Sarah Abo and Karl Stefanovic

The Today show is heading for a massive makeover. 

The Channel Nine breakfast show is set to announce all-new hosts after Sarah Abo announced her shock departure on Wednesday. 

Abo, who had been on maternity leave, has been holding the fort alongside a series of guest co-hosts after Karl Stefanovic abruptly left in June. 

She will conclude her role as co-host of the Today show at the end of the year. 

The big-name stars likely to take up the mantle are Sylvia Jeffreys and Tom Steinfort, news.com.au reported on Wednesday evening. 

Steinfort will replace Stefanovic, while Jeffreys will take over when Abo permanently departs at the end of the year, the publication reports.  

Abo announced the news of her exit via a press release on Wednesday afternoon. 

'Words can't express how grateful I am to our viewers for letting me into your homes to be part of your morning routine. Without you, there is no Today show,' she said.

'Together with 60 Minutes, I've spent my time at Nine chasing stories, travelling and reporting from all over the world, interviewing some incredible and inspiring people from all walks of life.' 

Sarah said that motherhood had 'heralded a new chapter' and that sharing that with her audience had been 'truly special.' 

'As many of you know, this has been a significant journey for my family and will continue to be my greatest achievement. I'd like to thank the wider Today team - the amazing crew, incredible producers and my wonderful fellow hosts - you all know how much you mean to me.

'It takes a special kind of crazy to wake up at the hours we do but it's so much easier when the team feels like family. I'll miss you all dearly.'

Nine Executive Director of News and Current Affairs, Fiona Dear, said: 'Sarah has been an integral part of the Today team, bringing warmth, energy and first-class journalism to the program each morning.

'It takes enormous skill to front three-and-a-half hours of live television every day, and Sarah did it with sharp journalistic instincts.

'We thank her for everything she brought to Today, and wish Sarah and her family all the very best.' 

Her departure from Nine comes after the shock exit of her former Today co-host Karl Stefanovic in June. 

Karl abruptly resigned from the network after his interview with far-right figure Tommy Robinson, which he uploaded to his podcast, The Karl Stefanovic Show, on YouTube, only to delete it hours later after facing backlash.

In a statement to The Daily Mail, Channel Nine said that Stefanovic could not continue working at the network while also hosting his podcast.