New details on the release date and rumors of "The Big Bang Theory" season 10 have been revealed, such as the potential brotherhood of Leonard and Sheldon. Also, the season could see whether Alfred and Mary hooked up, according to the show's executive producer.

"The Big Bang Theory" season 10 might premiere this fall, particularly on Sept. 22 or Sept. 29, according to Bustle. As per the publication, the CBS series is expected to air on the aforementioned date in fall, as its predecessors air in September. CBS has not give a comment that it is official; thus, the September premiere is yet to be confirmed.

With regard the story line, "The Big Bang Theory" season 10 may see Sheldon and Leonard as brothers, not because of their extreme bond, but because of their parents.

Fans may recall that Leonard's recently divorced parents, Beverly and Alfred, as well as Sheldon's mother, Mary, came to town in "The Big Bang Theory" season 9, which is entitled "The Convergence." To add, Alfred and Mary stayed in a hotel, with Penny telling them that they should turn their phones off if they did not want to be disturbed.

Whether something happened or not between Alfred and Mary was clarified by series executive producer Steve Molaro. In his interview with Entertainment Weekly, he said that he did not know what happened, adding that what he knew was the two had been getting along quite well, had left to go to the same hotel for a nightcap, and had turned off their phones.

For Molaro, information on what happened exactly would be left for "The Big Bang Theory" season 10 premiere.

Overall, "The Big Bang Theory" season 10 is assumed to air in September.