New Delhi, May 16 -- CBS has officially announced that Big Brother will return for its milestone 27th season this summer, with a supersized format that marks the reality show's biggest offering yet in its 25-year history.

Premiere date & Schedule changes

Season 27 will kick off with a 90-minute premiere on July 10 at 8 p.m. ET/PT on CBS. The show will then follow a packed weekly schedule:

Wednesdays at 8 p.m. ET/PT - Now expanded to 90-minute episodes

Thursdays at 8 p.m. ET/PT - Featuring the signature live eviction nights

Sundays at 8 p.m. ET/PT - Regular gameplay episodes

Fridays (alternating, starting July 25 at 8/7c) - New companion show Big Brother: Unlocked

Big Brother places a group of strangers in a house rigged with 94 HD ...