The Williams team have confirmed that they will debut their 2011 car, the FW33, on the first day of testing in Valencia on February 1st.
The Grove based outfit has opted to run an interim livery for the first test, as they did in 2010, before confirming their 2011 livery in due course.
Rubens Barrichello will get the opportunity to get behind the wheel first, completing a day and a half, with Pastor Maldonado taking over testing duties for the remainder.
