Smape has published a first impressions article on N79 & N85.
N85 and N79 turned out to have a rather ambiguous nature, making it hard to tell for sure which niche either of the two was meant to occupy. The junior N79 model can be mistakenly attributed with being a replacement or a sequel of N78. It's simply another minor portfolio expansion with a handful of parameters tweaked to differ from the original handset. N78 isn't phasing out yet, the handset is to stay as one of the most affordable and balanced business smartphones (sporting also some fashion phone traits, let alone the rich functionality) for quite a long while from now on.