Just came to know that Nokia Pro Camera update apk has leaked online which was under testing for Nokia 7. Same apk is available to download and working fine in Nokia 8 too, but it don't have Bokeh mode. As per my observation leaked apk is for Nokia 7 so it doesn't include Bokeh mode due to non-availability of dual camera.
It brings a good news for all of us and hope that Camera update is getting ready. Fingers crossed.
It has been available to side load for nearly 3 weeks.