I almost guarantee the fact that it still doesn't have the basic sensors like auto brightness, gyroscope, compass, backlight navigation keys. Though the design has improved a lot but Samsung isn't improving its hardware. Again it has the same processor as of J7 2016/J7 Prime. The price has a considerable increase compared to its predecessors, so it won't be a big hit in markets like India unless Samsung decides to reduce its proposed launch price. Pricing is almost close to the A and C series which are much better than this phone.
I'm still thinking that it might be the A8-A9 2017 or a new C-Series phone since the J already has a new design.