TRN chief content officer Dean Buchanan says a number of international A-list stars had committed to interviews that will be heard in the coming weeks.
"Polly and Grant have proven themselves as both have an exceptional track record that is world-class. The Hits captures all that was strong from Classic Hits and has evolved to recognise today's modern day adult listener."
Gillespie says it is a once-in-a-lifetime moment to be part of something great.
"We've got the chance to start a revolution. We've never done anything like this in our careers and it's something we're so excited to be part of. We've been working really hard to bring listeners everything they will love in a station - the best music, the biggest stars and the greatest experiences."
Buchanan says The Hits will continue to play music listeners know and love.
"It's about being able to sing out loud to a great mix of songs you know and love. This has been the core of Classic Hits and a key reason for its dominant success in the market. However, 40 is now the new 30 and if a hit song today resonates with this audience, we will also play it. We are no longer defined by era alone."