When will the new season of Big Brother start? Everything we know about season 27

CBS is all set to premiere the upcoming Big Brother Season 27 on July 10, 2025. Fans of the reality show have been eagerly awaiting the latest updates, and their wait will soon come to an end.

The new season of Big Brother will premiere with a 90-minute episode on Thursday, July 10, 2025. With the upcoming season of the CBS show, fans can expect several exciting changes, including hour-long episodes on Sundays and Thursdays, as well as 90-minute episodes on Wednesdays.

Here are all the latest updates and details regarding Big Brother Season 27 release date and time, exciting things to look out for in the show's add-ons, and more.

Big Brother Season 27: Release date, time, exciting add-ons, host, and more details

CBS will premiere Big Brother Season 27 on July 10, 2025, at 8:00 pm ET. The debut episode will be 90 minutes long, revealing the housemates. Additionally, fans will enjoy one-hour-long episodes every Sunday and Thursday. For Wednesdays, there will be 90-minute episodes.

New add-ons, including Big Brother: Unlocked, will air every other Friday starting from July 25, 2025. The timings for this one-hour episode will be from 8:00 pm ET onwards. Additionally, three BB All-Stars will reveal never-before-seen footage from the Big Brother house. It will also include exclusive interviews and surprise guests.

"Three BB All-Stars (who) offer never-before-seen broadcast footage from the house, exclusive interviews, surprise guest appearances and unprecedented behind-the-scenes access," states the press release.

Furthermore, the press release mentions that former houseguests will share their insights and expertise during the gameplay. Their "insider's perspective" would be an interesting thing to look out for.

"Former Houseguests (will) share firsthand insight and expertise as they analyze gameplay, assess the competition and give their insider's perspective."

For the fans wondering who will feature on Big Brother Season 27, there will be an "all-new group" of houseguests, according to the press release. Julie Chen Moonves will return as the host of the CBS show.

The previous season of Big Brother featured Chelsie Baham taking home the win after a strategic gameplay. She beat Makensy Manbeck and became the winner of the show.

Fans must also know about the franchise's additional reality shows similar to this one. It includes Celebrity Big Brother's three seasons, a spin-off series - Big Brother: Over the Top, and Big Brother Reindeer Games - a holiday special.

For the upcoming season of Big Brother, fans will surely enjoy the new add-ons from the show makers. It is because, even after witnessing what goes on inside the house, fans are always eager to learn more about them. Seeing the behind-the-scenes moments, which are not featured in the official episode, is quite exciting.

As the show progresses, participants get to know each other better and form alliances, resulting in shocking turn of events, betrayals, blind-sides, and more, which is reality-TV gold.

Also, watching the CBS show host, Julie Chen Moonves, navigate through the unfolding events in the house is an incredible thing to witness. As she uncovers how particular incidents took place, alliances form, and housemates betray their fellow participants, it is binge-worthy.

To learn more, fans will have to wait a few more weeks until the show premieres on July 10, 2025. From the very first episode, fans are in for a treat, as it will be a massive 90-minute premiere.

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CBS will air the upcoming Big Brother Season 27 Episode 1 on July 10, 2025, at 8:00 pm ET.

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