Big Brother 13 Casting News Still Nothing And We Wait

I keep checking for casting news. I saw something the other day that said we won't know until two or three days before the premier who is on the show. So I continue to wait.

Waiting of course is getting harder because they keep showing commercials for the new show.  I usually fast forward through commercials but I've caught a couple. I noticed one of the commercials said this year "the biggest twist ever".  So I've been trying to come up with ideas for what the twist could be that they haven't already done. Or do you think they would repeat an old twist?