Regarding the "format" for next season:
Favorites vs. Family -- not sure if this is what it will be called, but it is slated to be a tribe of returnees
vs. a tribe of their own loved ones. Next spoiler tag is regarding location. The last spoiler tag is the speculated cast.
They will be in the Philippines again next season, although in a different part of the country. Speculated cast below.
Tina Wesson (Australia) and her daughter
Aras Baskauskas (Exile Island) and his brother
Rob Cesternino (Amazon) and his wife
Rupert Boneham (Pearl Islands) and his wife
Monica Culpepper (One World) and her husband, Brad
Laura Morett (Samoa) and her daughter
Kat Edorsson (One World) and her cousin
Gervase Peterson (Borneo) and his nephew
Tyson Apostol (Tocantins) and his girlfriend
RC Saint-Amour (Philippines) and her father