Image Courtesy: Airtel
Here's how the 2013 grid looks after Max Chilton's seat being confirmed at Marussia.
Red Bull(Sebastian Vettel and Mark Webber)
Red Bull will have an unchanged line up for the 2013 season; the Austrian team have had the same line up since Vettel joined in 2009.
McLaren(Jenson Button and Sergio Perez)
Jenson Button will stay at the McLaren team for 4th season in a row after signing a multi-year deal with the British team last year. He'll be joined by Sergio Perez who has scored three podiums with Sauber this year. The Mexican will replace Lewis Hamilton who has been with the team since his F1 debut in 2007.
Ferrari(Fernando Alonso and Felipe Massa)
Ferrari will retain their 2012 line up of Fernando Alonso and Felipe Massa. Alonso has a contract with the team till 2016 while Massa has a one year contract. Earlier this year, many drivers including Hulkenberg had been linked with Ferrari.
Mercedes(Lewis Hamilton and Nico Rosberg)
Lewis Hamilton will replace Michael Schumacher and partner his Formula A teammate Nico Rosberg at Mercedes.
Lotus(Kimi Raikkonen and Romain Grosjean)
Lotus announced that they'll retain Kimi Raikkonen for 2013 in an interactive video. They haven't announced who'll partner this Finn but it's likely that it will be Romain Grosjean.
Sauber(Nico Hulkenberg and Esteban Gutierrez)
Sauber have an all new line up. Nico Hulkenberg moves in from Force India and he will parter Gutierrez who impressed with his performance as test driver.
Force India are yet to announce their 2013 line up however it's almost sure that Paul di Resta will be retained. He might be partnered by Jaime Alguersuari(he follows SFI on Twitter and that's the only team he follows) or Adrian Sutil.
Williams(Pastor Maldonado and Valterri Bottas)
Williams will retain the service of Pastor Maldonado who will be joined by Valterri Bottas who is the current GP3 world champion.
Toro Rosso(Daniel Ricciardo and Jean Eric Vergne)
Toro Ross will retain their 2012 line up after completely changing their line up earlier this year.
Charles Pic moves in from Maurssia. The other seat is still vacant.
Marussia(Timo Glock and Max Chilton)
Timo Glock will stay at Marussia for another year and will be partnered by Max Chilton, who performed the role of test driver for the Russian team in 2012.