Force India are to delay the debut of their 2015 car until the second winter test, the team have confirmed, and run the VJM07 at Jerez.
Mercedes have confirmed they will launch their new the car, the W06, at Jerez on February 1 ahead of the first day of winter testing.
A few of the potential talking points to look out for when the 2015 cars are put to the test for the first time.
Both McLaren-Honda and Ferrari will launch their 2015 cars online the week before the first pre-season test this winter.
Sky F1 will be broadcasting two bespoke programmes with the latest news and insight from Jerez and Barcelona after all 12 days of pre-season winter testing.
Force India will launch their 2015 charger and new livery in Mexico City on January 21.
Susie Wolff will test Williams’ 2015 car, the FW37, at the first Barcelona test in mid-February.
From the calendar to test dates and the driver line-ups announced so far, here's everything you need to know about 2015