CBS is pairing up its summer reality-show franchises this year, creating an unscripted block with "Big Brother 5" and "The Amazing Race 5."

The two shows will premiere with 90-minute episodes on Tuesday, July 6. "Big Brother 5" will open the night at 8 p.m. ET, with "The Amazing Race" beginning its fifth global journey at 9:30. The following week, they'll move to their regular time periods, "Big Brother" at 9 p.m. and "Race" at 10.

"Big Brother" will stick to the three-times-a-week schedule that has served CBS well the past four summers. Episodes will also air at 8 p.m. Thursdays -- in which a player will be evicted from the house -- and 9 p.m. Saturdays.

Although there are likely to be twists along the way, both series will adhere to their tried-and-true formats. The winner of "Big Brother" will pocket $500,000, while "The Amazing Race's" victorious two-person team will split $1 million. "Race" has 11 teams this time around, one fewer than in past editions of the show.

CBS also says it will debut the Mike Fleiss-produced series "The Will" sometime during the summer. A premiere date for the show, in which a wealthy head of a family gives part of the family's assets to one of his or her heirs, hasn't been set.