I did reply to this, but my post included hyperlinks and I think they're still being checked by moderators.
Basically, I said I'm not sure the specs you saw are for a Nokia 9, I think they're more likely the updated Nokia 8 or even a "Nokia 7 plus".
Different name same problem, now called Nokia 8 Sirocco but still trying to sell a 2018 phone with a 2017 chipset.
Every review i have read has said how bad a choice this is and i have to agree as i am in two minds to get this phone now.
I'm sure the fact the Sirocco still uses a 835 chipset is the reason it's not a Nokia 9. I fully expect the Nokia 9, when it's released, to have the highest spec chipset and processing power of any Nokia phone.