Mexico and a new race on the streets of New Jersey were among three grands prix listed provisionally on a record 22-round Formula One calendar issued by the governing FIA on Friday.
The inaugural Grand Prix of the Americas, to be staged against a backdrop of New York's Manhattan skyline, had looked doubtful earlier in the year when it was absent from a draft calendar circulated to teams.
The Korean Grand Prix, which moves from an October date to April 27, and the return of Mexico City as the penultimate race on November 16 after a 22-year absence also had asterisks against them on the list published by the International Automobile Federation.
Russia will make its F1 debut with a grand prix in 2014 Winter Olympics venue Sochi.
Whether the New Jersey race is confirmed for June 1 remains to be seen, although commercial supremo Bernie Ecclestone and sponsors have long sought a grand prix on the East Coast.