It will have some pressure sensors in the bezel, so you don't have to move your thumb for each page change, something I think is good.
It has a bit higher screen resolution: 300 PPI. This sounds very high, but to me it seems that the present model with about 230 PPI (pixels per inch) does not look at all as sharp as an LCD screen with the same PPI. It may be because the pixels are composed of little physical plastic balls which move, and perhaps getting 100% of them to move perfectly is not attainable. In any case, I'm sorry to say that while the front light made the Kindle a LOT better, I've gone off it a bit again, since when I take it out, the screen just seems significantly less sharp and less even than the great HD LCD screens we have become used to since Apple introduced the Retina Display four years ago, and later put it in the iPad. So I mostly use a tablet. (Which are also much faster.)
(Sorry, Paperwhite fans, it's just a feeling. If it works for you, I'm only happy. Perceptions are very subjective.)