Aside from leaks that have turned out to be false, we weren't expecting to see any of the new cars for the 2017 Formula One season this week.
Unexpected preview video of FW40
However, Williams sprang a surprise on Friday by offering fans an opening look at pictures of the FW40, whose name marks the outfit's 40th anniversary.
These include: a wider chassis, larger wings, and the return of the shark fin.
To be officially presented on 25 February
Driven by Felipe Massa and Lance Stroll, who has filled the void left by new Mercedes man Valtteri Bottas, the FW40 is to be officially unveiled on 25 February.
The 2017 Formula One season gets underway in Australia on 24-26 March.