Catelynn Lowell, Maci Bookout and Amber Portwood from original season Catelynn Lowell, Maci Bookout and Amber Portwood from original season

Original Teen Mom cast members Amber PortwoodCatelynn Lowell and Maci Bookout are returning for a new reality show, MTV announced this week. They'll also appear on a catch-up special that will air on the fall.

Portwood, Lowell and Bookout originally appeared on 16 & Pregnant and then filmed Teen Mom through 2012.

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The new show, which will air in 2015, will chronicle Portwood as she goes back to school after serving time in prison; Bookout as she continues her relationship with her boyfriend of two years, Taylor; and Lowell as she plans her wedding to her fiancé Tyler and prepares for the birth of her second child after giving her first daughter, Carly, up for adoption.

"I feel like documenting this pregnancy is totally different, because now it's our time to be parents," Lowell tellsUs Weekly, which first reported the news. "Tyler and I have always done the show to help people," she adds. "Now people can see what it will be like to juggle the responsibilities of taking care of our new baby while navigating our relationship with Carly and her adoptive parents."

Adds Bookout: "My family and I are in such a new and interesting place in our lives," she says. "I feel like I have grown up so much since the last time that I filmed anything for TV, so it will be very interesting to show viewers how our lives have evolved."

Not coming back to the network is their co-star Farrah Abraham, who's presumably continuing to pursue her options in the adult entertainment world.

Will you watch the new series?

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