Microsoft (and I believe Sony) have heavily hinted at the next round of consoles including standard and Pro versions. However, I don't see what the draw of the Pro versions would be.
The current Pro consoles are mostly GPU upgrades that are meant to push native/upscaled 4k. However, it's widely expected that next gen consoles should handle native 4k 30fps. What will be the case for next gen's Pro versions?
4k 60fps: You need top tier GPU's to run modern, demanding games at 4k 60fps consistently (on high/ultra settings). These GPU's are well over the price of an entire console. Furthermore, this would require markedly stronger CPU's as well so the price disparity between models would be very large.
Improved effects/textures: Does this really warrant an entire extra console line? Will future consoles be showed off using Pro versions, leaving standard console users to wonder what the game will look like on their console? So far this has been avoided because the only differentiating factor has been resolution but this will not be the case next gen.
What do you think next gen Pro consoles will be marketed around?