It won't happen next season, F1 chief executive Ecclestone admitted to Austria's Kleine Zeitung newspaper.
Asked how many races will be on the 2015 schedule, he said: "The same as this year -- so 19."
However, that may be at the expense of one or two existing races.
When asked specifically about the reportedly incoming Azerbaijan, and the project in New York, he said: "We want to go to Azerbaijan for a street race.
"As for New York, we are still talking to them."
One provisional race date on the 2015 schedule is already known. Salzburger Nachrichten newspaper says tickets for the Austrian grand prix on June 21 are already on sale.