Message board spoilers have poked around the CBS.com website and come up with the names and tribal breakdowns of the 16 Survivor 4 castaways the evening before the official announcement on CBS' 'The Early Show'

The sixteen players and their tribal breakdowns are:

TRIBE ONE

Gina
Hunter
Patricia
Peter
Rob
Sarah
Sean
Vecepia

TRIBE TWO

Gabriel
John
Kathy
Neleh
Paschal
Robert
Tammy
Zoe

See the below message board link for more details.

Source: SurvivorBlows message boards