Next season's calendar has been provisionally confirmed by the World Motor Sport Council (WMSC). 22 races, with three of those - New Jersey, Korea and Mexico - being provisional. The link gives the dates, as well as those for other categories, and the F1 dates are also here.
16th March - Australia
30th March - Malaysia
6th April - Bahrain
20th April - China
27th April - Korea (provisional)
11th May - Spain {note 1}
25th May - Monaco
1st June - America (provisional) {note 2}
8th June - Canada
22nd June - Austria {note 3}
6th July - Great Britain
20th July - Germany {note 4}
27th July - Hungary
24th August - Belgium
7th September - Italy
21st September - Singapore
5th October - Russia {note 5}
12th October - Japan
26th October - Abu Dhabi
9th November - USA {note 6}
16th November - Mexico (provisional) {note 7}
30th November - Brazil
Additional notes
1 - To be held at the Circuit de Barcelona-Catalunya, after the race-sharing agreement between Catalunya and Valencia fell through, and Valencia's track & buildings are reported to be in poor condition.
2 - To be held at the Port Imperial Street Circuit in New Jersey, subject to confirmation.
3 - To be held at the Red Bull Ring, previously known as the Österreichring and the A1- Ring. Last used for Formula 1 in 2003 as the A1- Ring.
4 - To be held at the Hockenheimring as per the race-sharing agreement with the Nürburgring.
5 - To be held at the Sochi International Street Circuit, around the Olympic Park used for next year's Winter Olympics.
6 - To be held at the Autódromo Hermanos Rodriguez in Mexico City, subject to confirmation. Last used for Formula 1 in 1992.
7 - To be held at the Circuit of the Americas, Austin, Texas.
I'm quite happy to see the return of Austria and Mexico, if I'm honest. Mexico's track seems interesting, and I'm looking forward to seeing cars racing around it again, despite the fact that the last F1 race there was a few months before I was even born.
I'd like to see New Jersey get on the calendar, but it all depends on whether or not they can pull it off and get it ready on time. Russia could be interesting, but given recent events in the country, I'm not as enthusiastic towards it as I was. Should still be a good season, though.