Mexico could hold its first Formula One race in 22 years in 2014 if a provisional schedule is approved by the World Motor Sport Council.
A draft calendar reported by the British Press Association on Thursday features an unprecedented 21 races. The previous high was 20, while there are 19 this year.
Mexico have been pencilled in for November 9 - a week before the United States Grand Prix - but their status is dependent on the Autodromo Hermanos Rodriguez being made race-ready.
There is set to be a new Grand Prix in Sochi, the Russian city hosting the 2014 Winter Olympics, on October 19 and that too is subject to approval by F1's governing body.
New Jersey will not host a race despite the backing of F1 supremo Bernie Ecclestone.
Traditional opener Australia will again kick off the season with Bahrain's bid to open the championship appearing to have failed. The campaign will start on March 19 and again end in Brazil on November 30.
The World Motor Sport Council meets on September 27 in Dubrovnik.