Nothing about the normal bb however.
2 celeb versions is overkill, and will damage the celebs they can attract imo. As winning the show won't feel as credible, and the media may even give it less coverage.
Then again it's clear they'll offer huge fee's, which should attract names that people have at least heard of.
I'll safely say an xfactor scandal act will be on at least 1 of them regularly every year, after they've made their headlines etc.
So as it stands
I'd say Jan 2013 CBB
May-July/early Aug BB
End of Aug/Sept CBB
According to the article its going to get bigger. So perhaps more live feed, increased advertising etc. = win