Will Arnett: Conan O'Brien And Andy Richter Will Guest Star In 'Arrested Development' Netflix Season (VIDEO)

Will Arnett may be starring in a sitcom already on television with "Up All Night," but excitement is building for his return to "Arrested Development" on Netflix in early 2013. While sitting down with Conan O'Brien and Andy Richter on "Conan," Arnett let drop a couple of guest stars in the upcoming episodes.

In fact, the new season of "AD" seems to be really piling on the guest stars, along with the entire original cast returning. Carl Weathers will be back, along with newcomers like Isla Fisher and Terry Crews. And, as it turns out, a lanky redhead and his late-night sidekick.

"There are a few people on stage tonight who are a part of it," Arnett said during the show. After a few minutes of hemming and hawing, he finally revealed what O'Brien and Richter already knew. They'll both be joining him on the new season.

What roles will they play? Fans will have to wait until 2013 when Netflix makes available the entire new season of "Arrested Development" on the same day. In the meantime, they can catch Arnett on "Up All Night," Thursdays at 8 p.m. ET on NBC, while O'Brien and Richter are there every weeknight on TBS at 11 p.m. ET with "Conan."

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