[Marsh.]

They said housemates will be given power that only Big Brother has had in the past.

So I'm guessing they will rule the house, maybe change rules (allow discussion of noms?), choose who nominates or saves people.

If won't simply giving punishments and rewards to people of their choice and being pampered in a special room and that's it otherwise there'd have been no point mentioning the game and twisting nominations to their advantage.