The company tweeted on Thursday: “Forecast: Winter weather ahead! @DisneyAnimation developing #Frozen2”
It was accompanied by a picture of sisters Elsa and Anna, with Sven the reindeer and Kristoff.
There’s no news on a release date yet.
Frozen was released at the end of 2013 and went on to become the highest-grossing animation of all time, and the fifth biggest film overall.
The movie won two Oscars in 2014 – best animated feature and best original song for Let It Go.
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