Matt, who shot to fame in boy band Busted during the noughties, has landed a part as Stacey Branning's boyfriend.
Earlier this month, we told how actress Lacey Turner is returning to Albert Square to reprise her role of Stacey in 2014 - so it now appears she'll have a new man on her arm!
Matt - who recently formed a supergroup with his Busted bandmates and McFly - is said to play a city broker called Luke who is devoted to Stacey.
However, due to his commitments with McBusted, it seems Matt will only be on our screens for a short while.
Confirming the exciting news, Matt was quoted in the Mirror saying: "I am so thrilled to be a part of such an iconic show. I grew up watching EastEnders so this is really exciting for me!"
This morning, Matt - who is married to Big Brother host Emma Willis - cryptically tweeted: "That first day at school feeling!"
Meanwhile, one EastEnders cast member who seems particularly excited about Matt's signing is Jacqueline Jossa, who plays Lauren Branning.
She retweeted a fan who had written: "@jacquelineMjos bet you are BUZZING about Matt Willis!!!! Busted are the best!!!"
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