Yes they are filming CFC 6.
This is the link to the wiki article which is based on a report from Entertainment Tonight. Celebrity Fit Club (US TV series) - Wikipedia, the free encyclopedia
I thought Erin Moran was an interesting choice as I had seen her on the VH1 "Scott Baio" show and she did not look overweight there.Season 6 - 2008
According to Entertainment Tonight, the sixth season is currently underway for broadcast in 2008.
The contestants are
Brian Dunkleman, former American Idol co-host
Mark Curry, actor/comedian
Andrew W.K., singer
Erin Moran, actress
Gena Lee Nolin, actress/model
Dawn Robinson, singer/former member of En Vogue