The hit TV series "The Big Bang Theory" season 9 left the viewers with a lot of questions, but followers of the show don't have to wait for the release of the next season to solve some of it. Here are some of spoilers for season 10 coming from Steve Molaro, showrunner of the comedy series. 

Molaro revealed during an interview with Entertainment Weekly that Penny (Kaley Cuoco) and Leonard's (Johnny Galecki) plan to remarry will be featured in the season premiere. However, it is not going to be pretty because a lot of conflicts will happen the night before and the following morning. 

Molaro stated that, "If you're wondering whether Penny and Leonard will make it down the aisle again, what happened on the eve of their vow renewals might get in the way. We're left with a good amount of tension between all the parents. There's a lot of fallout the following morning before we even get to the ceremony, if we even do."

Speculations say that it will be between Sheldon's mother, Mary Cooper (Laurie Metcalf), and Leonard's father, Alfred Hofstadter (Judd Hirsch). At the finale episode of season 9, both left the dining table hastily. It turned out that they don't just share the same hate toward Alfred's ex-wife, Beverly, but they were also staying at the same hotel. 

Thus, it leads to the next speculation that Alfred and Sheldo (Jim Parson) could possibly be biological brothers. Molaro then stated that, "It's inching toward that, isn't it? There was — it fell out of the script — a joke referring to them as potential brothers. I'm going to go with the word 'uncomfortable' probably is a good starting place for their primary emotion of where we leave them and where we will pick up."

Other relationship milestones could also happen in season 10, but there will be no babies to expect yet. However, it's safe to speculate that Sheldon and Amy (Mayim Bialik) will move in together since Sheldon let Leonard live with Penny. 

Moreover, fans should expect more from this season since Molaro also said that they were not thinking that season 10 will be the end of the hit comedy TV series.