The twist will see each skater and their professional partner paired with another couple, with the match-ups formed based on their position on last week's scoreboard.
Each pairing will take to the ice at the same time, performing their own routine to the same music.
The Ice Panel - Robin Cousins, Katarina Witt and Louie Spence - will then choose which couple they thought skated best, automatically guaranteeing them a place in week four of the competition.
At the end of the battles, six of the celebrities will be left to face the public vote. The normal format will then carry through to the results show; with the bottom two performing in the skate-off.
Having ended up joint first on the leaderboard, soap stars Matthew Wolfenden and Jorgie Porter will go head-to-head in one of the ice battles. The other pairings are Andy Whyment V Rosemary Conley, Heidi Range V Charlene Tilton, Jennifer Ellison V Sebastien Foucan, Chico V Sam Nixon, and Corey Feldman V Chemmy Alcott.
"The celebrities were extremely shocked when they found out the twist," an insider told Digital Spy. "It wasn't what any of them were expecting. The pressure is really on to perform; each will want to pull out all the stops to win the ice panel's support."
Dancing on Ice continues Sunday at 6.45pm on ITV1.
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Scroll through a gallery of Sunday night's Dancing on Ice below: