MTV announced on Thursday that the upcoming sixth season of "The Hills" will premiere in April. But the network also dealt a blow to fans with the news that this will be the last season of the reality hit that made household names of Heidi Montag and Spencer Pratt, while continuing the stories of "Laguna Beach" vets Lauren Conrad and Kristin Cavallari.

"We are lucky and honored to have worked with this cast and tell their stories for this long, and we are grateful to the many dedicated fans who have stuck with us over the years," said Tony DiSanto, president of programming at MTV. "We owe it to those fans, the cast and the show to go out on a high note. And this season will deliver on that goal in terms of drama, story, real emotion and an organic culmination of this saga."

In the final 12 episodes, kicking off on April 27, fans will see Audrina Patridge dating singer Ryan Cabrera, and Kristin Cavallari contending with rumors of drug abuse. The show will also examine several other unanswered questions from season five: Will Kristin and Justin Bobby last? Was that really the last time Audrina and Justin Bobby will ever speak to each other? Will Brody actually break up with Jayde? And will Heidi and Spencer ever have a baby Speidi? Given that this is the last season, those issues are sure to get even more dramatic leading up to the finale.

"I think we've told the story of struggle and of finding yourself in L.A.," creator Adam DiVello said. "A lot of these kids have found themselves and have certainly embarked on different careers and different paths."

Indeed, many of the events of the past few months find their way into the season, including Heidi Montag's plastic surgery, the results of which she shows to her mother in the first episode. "We tell the whole story," DiVello said. "We pick right up where Heidi goes and sees her parents. And our cameras are there that minute the mother opens the door and sees her daughter for the first time."

Executive producer Liz Gateley added, "It's a really touching but heartbreaking scene to watch."

But with the show coming to an end, will its former star LC stop in to say goodbye? "I always joked it would be nice to see Lauren get married," DiVello said.

What do you think will happen in the final season of "The Hills"? Let us know in the comments below!

"The Hills: Final Season" premieres on April 27 at 10 p.m. ET/PT followed by "The City" at 10:30 p.m. ET/PT on MTV.