Pro Camera update is only for the phones with ZEISS Optics lens. Nokia 6 doesn't have ZEISS lens so it will not get the Pro Camera update!
No! Juho Sarvikas, the Chief Product Officer of HMD said that only the phones with ZEISS branding camera lens will be getting the Pro Camera Update. If you need Pro Camera on Nokia 6 then you will need to install the apk file by yourself. HMD is not going to provide official Pro Camera update to the phones without the ZEISS lens. This is final and there's no point of discussing it any further!