CONTROVERSIAL reality series Big Brother is set for a relaunch.

A 2012 version of the one-time ratings smash hit is destined for Channel Nine, the Herald Sun reported.

Rival Channel Ten sought to bid on the reborn series, titled Big Brother: Secrets, but it is understood Nine signed the deal today.

"I understand we are doing it,” a Nine source confirmed.

Nine is certain to produce the show on a smaller scale than in the past.

It is believed that Nine is also determined to let viewers know it won’t be the same old Big Brother, which slipped into ratings decline in its eighth and final season on Ten.

The new show will be marketed as Big Brother: Secrets ... every housemate has a secret."