'Big Brother 27' Sets July Premiere for 'Biggest Season Ever' With All New Houseguests

CBS has set "Big Brother 27" to premiere on July 10 - but first, let's break down what's changing for the series' "biggest season ever" since it premiered back in the summer of 2000. As always, Julie Chen Moonves will be back to welcome a brand-new group of houseguests into the Big Brother house with a 90-minute premiere on Thursday, July 10, followed by another 90-minute episode on Sunday, July 13. For the remainder of the season, all Wednesday night episodes will also be 90 minutes long, while Thursdays and Sundays will revert back to their normal hour-long length. However, . . .