Saturdays star Una Foden, Rugby League player Martin Offiah and Digital Spy's very own Anna Williamson have all been confirmed to appear later on in the series, but who are the celebrities taking the plunge in heat one?
The first show of the series will feature TV presenter Michaela Strachan, Hollyoaks star Gemma Merna, TOWIE's Gemma Collins, Diversity dancer Perri Kiely and former EastEnders actor Ricky Groves.
The Olympic diver revealed that he has already been impressed by the "incredible" talent of this year's famous faces.
He said: "The first series of Splash! really struck a chord with people. I think audiences connected with it because they could tell the celebrities were really having fun.
"The talent in this series has been incredible, too. After just two days of training, all the celebrities were further ahead than the guys last year were after three weeks. They have all been so incredibly brave."
Tom Daley's Splash! returns to ITV on Saturday, January 4 at 7.20pm.