About 650k from August to October it seems.
PS4 should be 500-550k from August to October. We have not official numbers but estimate puts PS4 <550k.
2020 predictions: NSW 21m, PS5 6m, XSX 4.5m, PS4 9m, XB1 3m
(PS5 and XSX predictions will most likely change after we know enough about them)