The German GP looks set to be dropped from the final 2017 schedule when it is confirmed by the World Motor Sport Council on November 30.
As previously reported, Bernie Ecclestone has made to clear that the Hockenheim promoter does not want to pay the fee that he has proposed, having given the race a special deal in 2016.
Hungary is now expected to move from July 23 to the original German date of July 30, mainly because without that change there would be a break of four weekends with no races.
The other changes are under discussion which will move the 2017 schedule closer to this year's, although they will not become official until the WMSC approves them.
Malaysia had been placed on its own in a swap with Singapore, leaving the latter back-to-back with Japan.
It is understood that this will probably be reversed so that Singapore is once again a standalone event.
Austin had been on its own in the provisional calendar, with Mexico and Brazil placed together. However, Mexico is set to be moved so it is paired with Austin once more.
Possible Formula 1 2017 calendar
|March 26||Australian GP||Melbourne|
|April 9||Chinese GP||Shanghai|
|April 16||Bahrain GP||Sakhir|
|April 30||Russian GP||Sochi|
|May 14||Spanish GP||Barcelona|
|May 28||Monaco GP||Monte Carlo|
|June 11||Canadian GP||Montreal|
|June 18||European GP||Baku|
|July 2||Austrian GP||Red Bull Ring|
|July 9||British GP||Silverstone|
|July 30*||Hungarian GP||Hungaroring|
|August 27||Belgian GP||Spa-Francorchamps|
|September 3||Italian GP||Monza|
|September 17*||Singapore GP||Marina Bay|
|October 1*||Malaysian GP||Sepang|
|October 8||Japanese GP||Suzuka|
|October 22||United States GP||COTA|
|October 29*||Mexican GP||Mexico City|
|November 12||Brazilian GP||Interlagos|
|November 26||Abu Dhabi GP||Yas Marina|
* indicates changes from first version