With a little over three weeks to go until The Big Bang Theory's ninth season, spoilers of what to expect in the new season are starting to flow out. Here's a round-up of what's been reported over the past few days:

A new The Big Bang Theory spin-off from producer Chuck Lorre is in the early stages of development for the streaming service Max, formerly known as HBO Max.

A new book providing the ultimate behind-the-scenes look at The Big Bang Theory's twelve-year run was released today. The Big Bang Theory: The Definitive, Inside Story of the Epic Hit Series is a 528-page oral history of the show based on over 120 hours of interviews with the cast, creators and producers of The Big Bang Theory.

A definitive, behind-the-scenes book about The Big Bang Theory is set to be published in October. The Big Bang Theory: The Definitive, Inside Story of the Epic Hit Series is based on interviews with the entire cast, along with the creators, producers and executives behind the most popular sitcom of the last decade.

Simon Helberg will be reprising his role as Howard Wolowitz in the sound booth on Young Sheldon, reuniting with Jim Parsons who narrates the show as Adult Sheldon.