The US version of Big Brother will get underway with its fourth season on July 8.

The show, which airs on CBS, will air three times a week with a format largely unchanged from the last season, although no doubt will encompass some surprises and twists.

The Tuesday and Friday shows, airing 8pm ET, will focus on the latest from the gang, including the food compeition, the weekly nominations and the power of veto competition (should it return). Each Wednesday one houseguest will be evicted live at 9pm ET.

Julie Chen returns as presenter of the show.