Williams has revealed its testing schedule for both Barcelona tests, with Valtteri Bottas set to debut the FW38 on Monday.
Bottas will take part in the first two days of the opening Barcelona test before handing over to team-mate Felipe Massa, a running order Williams will repeat the following week for the second winter test. Last month performance chief Rob Smedley said the team planned to unveil the car on the morning of February 22 in the Circuit de Catalunya pit lane.
.@ValtteriBottas will be on track at testing 22 & 23 Feb, 1 & 2 March and @MassaFelipe19 24 & 25 Feb, 3 &4 March... pic.twitter.com/qpiCNgVM6n
— WILLIAMS RACING (@WilliamsRacing) February 17, 2016
Williams enters 2016 having secured third position in the constructors' championship for two seasons in a row. Despite its renewed form it has not secured a win in either season despite having the Mercedes power unit.