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Here’s an unexpected “development”: Portia de Rossi has signed on for a “top secret arc” on “Scandal.

The “Arrested Development” actress’s wife, Ellen DeGeneres, revealed the casting news in a Twitter joke.

“So annoying when people brag on twitter & that’s why I’m not tweeting that Portia just signed on to do a top secret arc on ‘Scandal.’ Oops,” she tweeted this afternoon.

De Rossi returned to her role of Lindsay Bluth in the fourth season of “Arrested” last year, which was resurrected by Netflix after nearly a decade off the air.

Her other recent credits include “Better Off Ted,” “Nip/Tuck” and NBC’s failed “Munsters” reboot, “Mockingbird Lane.”

Last season featured another high-profile guest star in the form of Lisa Kudrow, who played Fitz’s (Tony Goldwyn) presidential opposition in a recurring role.

Who do you think Portia will play in the new season? Share your guesses in the comments section below!

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