The show is current in its ninth season on CBS and is renewed until 2017, but after that its future is uncertain. Speaking to The Hollywood Reporter about whether or not the show will continue, Molaro was realistic, said:
I can’t speak to the future or on behalf of the cast or where we’ll be then but it’s certainly possible that it could go past that. The reality is that maybe season 10 is the ending point. The real answer is I don’t know and all I can do right now is go episode to episode and try to make each one the best that we can. There’s still so many episodes to go. Even if hypothetically season 10 was the end, I wouldn’t be focusing on that yet. That seems like something that would be dealt with way down the line.

But even though there is the existence of an uncertain future after Season 10, Molaro talked about/said more Several different ideas and characters who he would like to form a story arc around if possible
There are still a lot of characters out there in this world that we’ve never met that I’m still excited, over the next season and a half, to get a chance to do something about. We’ve never met Penny’s mom, Leonard’s dad, Sheldon’s Meemaw or Howard’s dad — and that’s a big tentpole that’s still floating out there.
We would definitely wanna see sheldon’s Meemaw (grandma) and Penny’s Parents.Lets Hope what we get.
‘The Big Bang Theory’ returns to CBS on January 7, 2016.
Do you think The Big Bang Theory should end after Season 10 or not?