Even as 'Big Bang Theory' Season 8 is scheduled for a September 22 release, fans of this CBS sitcom are bubbling with questions regarding some of the hints about the upcoming installment that the cast have already revealed.

For instance, it has been learned that Kaley-Cuoco playing Penny, and Johnny Galecki as Leonard are getting ready for their onscreen wedding.

Revealing a little on 'The Big Bang Theory', Season 8, Kaley Cuoco made fun of Penny saying that her character is not certain about any plans regarding the wedding. She said, "I mean Penny is so aloof and care free about the whole affair; it is almost as if Leonard is the bride in this setting."

Moreover, there are rumors that as the wedding day is approaching fast, Penny may be introducing her mother to the show. Some reviews of 'The Big Bang Theory' Season 8 say that Kaley-Cuoco hinted that Lisa Kudrow is likely to portray the character. However, there is no certainty that she will be making her debut on the show.

As far as Sheldon (portrayed by Jim Parsons) is concerned, fans definitely want to know whether he will be making a come back in the upcoming season of the show. When contacted, the show creator was rather evasive about Sheldon's character as well as the plot. Many fans see Sheldon's unresolved issues with love interest Amy as incentive to continue writing him into the show.

Nevertheless, Steve Molaro, the executive producer of the show has been contemplating to keep him away from 'Big Bang Therory' Season 8. All said and done, the upcoming series of episodes should continue to keep the show a hit.