Bravo has announced that The Real Housewives of Orange County's fifth season will premiere on Thursday, November 5 at 10PM ET/PT and also revealed the new season will include the departure of Jeana Keough.

Keough -- who has appeared in every The Real Housewives of Orange County episode since the series premiered in 2006 -- had previously stated that she had yet to sign-on for the show's fifth season, which the network ordered in April.

"We haven't signed.  We're negotiating still," she said in June about her family's contract situation. "They wanted us for a longer term. I don't know that it's dead yet. We're going to try to give them some time to figure out what they're doing."

Bravo subsequently began production on The Real Housewives of Orange County's fifth season in mid-July and announced that 32-year-old Alexis Bellino, her husband Jim, and their three young children would be joining the show's cast for its fifth season.

In addition to Bellino joining the cast, Bravo also announced that Keough, Tamra Barney, Lynne Curtin, Vicki Gunvalson, and Gretchen Rossi would all be returning for the show's fifth season.

However Keough's stint on the show comes to an end during the fifth season, apparently due to problems with her real estate business.

"Changes are in store for the girls this season as they must say farewell to longtime housewife Jeana Keough," Bravo stated in its fifth-season premiere announcement.

"[Her] real estate business has been hit the hardest, and she makes the decision to turn her focus away from the ladies to concentrate more on her work and family."

Keough's departure will leave Gunvalson as the only original The Real Housewives of Orange County cast member still with the show.

In addition to Keough's departure, The Real Housewives of Orange County fifth-season episodes will include Gunvalson taking her family on a trip to Italy as her insurance company continues to thrive; Barney coping with both family and financial concerns while also befriending the Bellino family; Curtin facing a possible eviction from her home; and Rossi dealing with the loss of her fiance Jeff, who passed away in September.

The Real Housewives of Orange County is produced by Evolution Film & Tape Inc., with Douglas Ross, Gregory Stewart and Kathleen French serving as executive producers.