Corkery has already changed his Twitter bio to: "Grumpy (and now unemployed) old journo."
Earlier today it was revealed that news anchor Carolyn Robinson has also left the broadcaster after 15 years with MediaWorks. She is said to be looking forward to "having her weekends back and spending them with family".
The exits come as the channel integrates its media platforms - bringing television, radio and digital news services into one 'newshub'.
It announced today it was ditching its traditional 6pm bulletin and replacing it with a rebranded Newshub Live.
The new service will launch on February 1, with the 6pm show hosted by veteran anchors Hilary Barry and Mike McRoberts.
The channel's midday news show will be presented by journalist Jeff McTainsh, while Samantha Hayes will anchor the channel's late current affairs programme. Melissa Davies and Tom McRae will host the weekend's news programmes.