Toro Rosso have released the first images of their 2019 vehicle to kick off Formula 1's eagerly-anticipated "launch week".
The vehicle is powered by Honda's new RA619H hybrid engine.
Toro Rosso team boss Franz Tost has already warned that his team will once again work in the interests of Red Bull Racing this year whenever required to help the senior squad's development rate.
Sitting opposite the Russian in the team's garage this season will be new recruit Alexander Albon.
The second Toro Rosso vehicle to be designed around the Honda power unit, the STR14 was launched online via a video on Monday.
With both Red Bull and Toro Rosso now supplied by Honda, the junior bull outfit's STR14 has received its complete rear-end design from Milton Keynes' engineers, with the common componentry making life much easier for Honda.
Toro Rosso's unveiling begins a busy week in Formula 1, with the remainder of the teams set to launch their 2019 programmes in the build-up to the start of testing next Monday.
By the end of this week nine of F1's 10 teams will have either revealed their all-new auto in full, or their 2019 livery, ahead of the start of winter testing at Barcelona next Monday.
On the driver front, Red Bull has brought back to the fray 24-year-old Daniil Kvyat, who endured several gyrations between Red Bull Racing and Toro Rosso between 2014 and 2017, when he left the Faenza team before the end of that season.
"He showed some very good performances but to perform under pressure is always a challenge, now we can say with hindsight it was just too early. I strongly believe he deserves another chance in Formula 1". Me and my engineering crew will do everything we can to squeeze the maximum out of the package we're given by the team. "I'm just focused on myself and let's see how it all goes". If the team can do that, then developments will be better planned and it can move forward. "For our partnership with Toro Rosso, that means finishing higher up in the Constructors' Championship, scoring more points, running more reliably and, maybe even repeating last year's Bahrain result or doing better".
The junior Red Bull squad finished ninth in the championship past year, ahead of only the struggling Williams outfit.
After the loss of technical director James Key to McLaren, Toro Rosso has made a decision to form a stronger partnership with its parent company Red Bull.
Red Bull's junior team are this year taking advantage of new rules allowing teams to buy parts from rivals.