Berlin provisional first weekend of march.
Inzell to follow on the week after.
And Heerenveen on the easter weekend.
All subject to confirmation by FIM in october/november
Russian dates are slightly delayed due to the corona problems. They had to fix their summer season calendar first.
Sportowefakty is now also reporting the 8 GP scenario: https://sportowefakty.wp.pl/zuzel/891550/zuzel-grand-prix-2020-w-formie-czterech-podwojnych-turniejow-znamy-daty-i-lokali
Prague looks as a possibility. They already had speedway meetings in Czech with 400-500 crowds.
Togliatti indeed very unlikely... would have been nice though. Great place.
Maybe Vojens?