'The Big Bang Theory' season 10 spoilers: Bernadette to give birth; Penny's personal life to be explored

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"The Big Bang Theory" will premiere its 10th season on Sept. 19, and Steve Molaro, the show's producer, has revealed some spoilers for this hit sitcom.

According to Game N Guide, the showrunner has given a promise that a lot of fans can expect more things from "The Big Bang Theory" cast with the newest season. First in the order is that Bernadette (Melissa Rauch) is confirmed to be pregnant, and when asked if the baby will be featured on the show within the season, Molaro enthusiastically said that it was the plan all along. As such, the sitcom's audience can now expect an adorable addition to the show's cast soon.

Another character of interest is Penny (Kaley Cuoco), and with her relationship steadily improving, fans should expect that her professional life will see more developments. She will be given a choice whether she will still continue working for Bernadette's company as a medical representative or finally pursue her acting career. Regardless, Molaro promises fans that Penny's career will bloom even more this 10th season.

Furthermore, a lot will be revealed about Penny's personal life as well. After all, a lot of fans note that Penny's last name did not really get a mention until she eloped with Leonard back in Season 9. According to The Bitbag, the upcoming season will divulge more about her since some of her relatives will have a surprise visit from Sarah (Katey Sagal), her mother, as well as her brother.

The same article points out that Susan will be a neurotic character, possibly due to the fact that Penny's brother, Randall (Jack McBrayer), is a tough person to deal with. After all, Randall, called the "chemist," was known for selling drugs as well as causing trouble, often landing him in prison.

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