Although the team have officially competed as ‘BMW-Sauber’ for the past four years, this confirms the return of Sauber as an independent outfit in F1, last seen in 2005.
Sauber still have to sign the Concorde Agreement which will guarantee their space on the grid.
It remains to be seen if Toyota will have to pay a fine to the FIA for leaving the sport despite having committed to it until 2012.
Sauber have been tipped to use Ferrari engines next year, as they did in F1 from 1997-2005, during which time they were badged Petronas.
However hopes for a full 13-team grid may yet be dashed as Renault have not confirmed their participation in 2010.
Read more: 2010 F1 drivers and teams