He said: 'At 5pm today I will be making an announcement about a big career change. Watch this space.'
It is not clear what his new role would be but some have speculated that he will be heading up the channel.
It comes after presenter Guto Harri was suspended for taking the knee live on television in a move that angered many viewers.
Mr Harri took the knee on Tuesday in solidarity with black England football stars after they suffered racist abuse in the aftermath of the team's defeat on penalties in the Euro 2020 final.
But it offended some viewers amid criticism that anyone who takes a knee - including police officers, sports stars and TV presenters - risks being seen to endorse some of the Left-wing ideas promoted by the Black Lives Matter organisation, as well as opposing racism.
Today, a source at GB News told MailOnline: 'Farage already has a weekend show on GB News, but yes you're right in thinking he is getting a more regular slot.' They suggested that the 57-year-old's new role will see him make a daily appearance on the channel.
Nigel Farage is expected to announce that he will be joining GB News on a more permanent basis
Farage teased his expected GB News announcement on Twitter on Saturday morningInsurance Loans Mortgage Attorney Credit Lawyer
Rumours of the addition were already swirling on social media.
One Twitter user wrote: