Formula 1's governing body the FIA has issued the 2017 entry list, which features four available seats following Nico Rosberg's shock decision to retire just last week.
Among the other free seats are Sauber, which has yet to confirm who will partner Marcus Ericsson, and both Manor seats.
Sauber are in advanced discussions with Pascal Wehrlein, but those talks are now on hold as the young German is evaluated for the second seat at Mercedes alongside Lewis Hamilton.
Meanwhile Manor's Esteban Ocon has joined Force India alongside Sergio Perez, leaving Manor with two vacant seats.
The only other notable 'TBC' on the list is that of Toro Rosso's engine supply. Although the Faenza-based team have confirmed a new deal to run Renault engines, having run year-old Ferrari power units in 2016, they have yet to decide whether to call them Renault, or join sister-team Red Bull in branding them 'Tag Heuer'.
| # | Driver | Entrant | Team | Chassis | Engine |
8 | Romain Grosjean | Haas Formula LLC | Haas F1 Team | Haas | Ferrari |
20 | Kevin Magnussen | Haas Formula LLC | Haas F1 Team | Haas | Ferrari |
27 | Nico Hulkenberg | Renault Sport Racing Ltd | Renault Sport Formula One Team | Renault | Renault |
30 | Jolyon Palmer | Renault Sport Racing Ltd | Renault Sport Formula One Team | Renault | Renault |
14 | Fernando Alonso | McLaren Racing Limited | McLaren Honda Formula 1 Team | McLaren | Honda |
2 | Stoffel Vandoorne | McLaren Racing Limited | McLaren Honda Formula 1 Team | McLaren | Honda |
TBC | TBC | Manor Grand Prix Racing Limited | Manor Racing MRT | MRT | Mercedes |
TBC | TBC | Manor Grand Prix Racing Limited | Manor Racing MRT | MRT | Mercedes |
44 | Lewis Hamilton | Mercedes-Benz Grand Prix Limited | Mercedes AMG Petronas Motorsport | Mercedes | Mercedes |
TBC | TBC | Mercedes-Benz Grand Prix Limited | Mercedes AMG Petronas Motorsport | Mercedes | Mercedes |
3 | Daniel Ricciardo | Red Bull Racing Limited | Red Bull Racing | Red Bull Racing | TAG Heuer |
33 | Max Verstappen | Red Bull Racing Limited | Red Bull Racing | Red Bull Racing | TAG Heuer |
11 | Sergio Perez | Force India Formula 1 Team Limited | Sahara Force India F1 Team | Force India | Mercedes |
31 | Esteban Ocon | Force India Formula 1 Team Limited | Sahara Force India F1 Team | Force India | Mercedes |
9 | Marcus Ericsson | Sauber Motorsport AG | Sauber F1 Team | Sauber | Ferrari |
TBC | TBC | Sauber Motorsport AG | Sauber F1 Team | Sauber | Ferrari |
5 | Sebastian Vettel | Ferrari SPA | Scuderia Ferrari | Ferrari | Ferrari |
7 | Kimi Raikkonen | Ferrari SPA | Scuderia Ferrari | Ferrari | Ferrari |
55 | Carlos Sainz Jr | Scuderia Toro Rosso SPA | Scuderia Toro Rosso | Scuderia Toro Rosso | TBC |
26 | Daniil Kvyat | Scuderia Toro Rosso SPA | Scuderia Toro Rosso | Scuderia Toro Rosso | TBC |
77 | Valtteri Bottas | Williams Grand Prix Engineering Limited | Williams Martini Racing | Williams | Mercedes |
18 | Lance Stroll | Williams Grand Prix Engineering Limited | Williams Martini Racing | Williams | Mercedes |
