If by specs you mean more rumors? not really. I don't trust specs until NDAs have been lifted.

Any thoughts on this now we have some specs revealed?

I don't think that's even necessarily that it won't be quite the leap so much as it won't be a "noticeable leap". The biggest improvements in graphics these days are immersive and not necessarily just in textures, animations, etc. The shadow of your player character isn't what will improve but instead that of every other shadow in the game. That type of thing.

Reflections will be perfect, environments will be larger and special effects will be dramatically improved. These are far harder to quantify because they are the background of the game. But I suspect from a technical standpoint, these improvements will be maybe even four times what we saw in previous generations.