CBS BIG BROTHER 2013 CONCEPT RUMORS

For over a decade the show has been a staple of the Summer Tv line up on CBS.   The concepts change from season to season however the one thing that stays the same is "people are locked in a house and once a week somone is voted out". 

I herd that this years concept is "Fan favorites Vs ---"   I just don't know if its true.  

If I were CBS I would bring back people that came in third or fourth place.  Those contestants would seem to be the most eager to play again and they would also most likely be very agressive.