The Hinwil based team "realises the importance of continuity", a statement read, confirming that Nick Heidfeld would again drive alongside Robert Kubica.
As reported earlier, Timo Glock has not yet been confirmed as next year's official test driver because he is currently negotiating for a race deal elsewhere in pitlane.
A BMW statement confirmed: "With regard to signing a test and reserve driver, an announcement will be made at a later stage." (GMM)