Still, the question remains: Will Heigl or Rogen pop up at any point in the new film? MTV News put that very question to Rogen when we caught up with him while he was promoting "Green Hornet."It wouldn't be a spin-off without Rogen. They could always have Katherine's character being away on assignment.
"I don't know," he admitted.
Rogen went on to explain that he had some knowledge that Apatow was working on "Knocked Up"-related material, but didn't know if a project was locked in or if there's a part in the script for him.
"[Judd] mentioned it to me off-handedly a year ago, and then I just read about it just like everybody else," Rogen explained. "I was like, 'Oh man, it looks like it's really happening.'
"So, I don't know," he added. "I'm going to call him today and see what the deal is."
Other news on the Apatow front: Lena Durham's pilot was picked up by HBO as a series.
HBO has decided to pick up the Judd Apatow-produced comedy series Girls, which has been described by New York Magazine as a version of Sex and the City with younger characters.
Girls was created by Lena Dunham, who is best known for writing, directing, and starring in the 2010 independent comedy film, Tiny Furniture, which received Independent Spirit Award nods for Best Cinematography, Best First Feature, and Best First Screenplay.
Dunham is set to star in the New York City-based comedy series. Dunham’s Tiny Furniture co-star, Jemima Kirke, will be a part of the cast. Adam Driver, Zosia Marmet, and Allison Williams have also been confirmed as cast members in the forthcoming HBO series.