I've been trying to explain to people for a long time ... even if we keep double or quadrupling graphics processing ability ... they're not going to be very impressed with the resulting visuals. (They are drastically improved, it was hard to see in the live streams, but it is significantly higher fidelity ... not that it's going to matter, because developers have been using graphical tricks for so long, people thought we had higher end graphics a long time ago)
The console is what you should be expecting from them (and Microsoft, for that matter). It's a drastically large increase in hardware capacity (the system is on par with the computer I just built, literally) as well as a novel addition, there's additional hardware used exclusively for background activity (very good idea). The real-time video encoding is something that should be standard on platforms, but here it has the potential for streaming to devices over the net (if latency is low enough). They talked about in home streaming to Vita, but net would be possible, speed is the only issue.
Sony has NEVER come rolling out of the gate with a new console that looked revolutionary. It's always just been claims of "best experience". if you want innovation ... you're going to have to look for that in games themselves, not the platforms they're on.
What will be good from this coming generation is ... there's not going to be as many radical differences between hardware platforms, the rumored Xbox specs are in line with what we saw the PS4 have, x86 architecture, 8 core AMD CPU, 8GB RAM, etc. Believe it or not, this is actually going to make games better ... but you're going to have to learn how to see the difference. Since 3D games started ... gamers have been visually lied to through various means ... if you never spotted the issues resulting from these, then ... yeah you're going to think this looks exactly the same, just higher resolution, but it's not. I think that the next area that's going to be tackled in games is simulation. We're going to see more things in the world simulated, rather than estimated statically. So, instead of a gun shot animation when someone is being shot, it'll be physics simulated ... while that sounds awesome (it is) it's not going to appear all that different at first.
For example, if you didn't notice in the Killzone video, there are several graphical things going on that are not possible on current consoles. (PC, of course, it's the basis hardware for this new box) A. Draw distance was extremely far without flickering or models popping in and out of existence B. lighting was global illumination ... only Crysis 2 and 3 can really claim to have this (and SOME late UE3 titles have some GI) Shadows are still bunk, just higher resolution bunk. C. particle simulation. The smoke in the demo appears to all be mostly simulated particles. Which is NOT what other games (besides Crysis) use. Normally it's a 2D sprite on a quad. As a result, you get clipping through the world. (It's the reason why you see hard lines on fog and smoke when hitting the ground in most games) That didn't happen in that demo. D. the textures are high enough resolution that you don't notice them anymore.
So, what this stuff is going to allow is creating experiences that weren't possible before ... developers aren't going to make PC exclusive titles, so it's good that consoles are getting some parity in that area (at least for now) games are going to become multi-threaded (fantastic) 64-bit (finally) and physics activated besides just some extra eye candy. These are all good things, and they will radically change the way we play games (Developers will be free to start moving away from static environments, for example)
I'm not sure what to think of the DualShock 4, though. I guess it looks like it'd be comfortable. The ability to track where everyone is at will be good, if it works right (it should, the cameras are pretty high resolution, which they didn't talk about at all). The whole touchpad on the face of the device, I'm not really sure how that's going to help me out, honestly. I suppose most developers will use it for more precise aiming in shooters? (Which would actually be really awkward, even if it's just for small adjustments)
I like the idea of sharing stuff ... I don't like the idea of anyone being able to see what I'm playing (or taking control of what I'm playing). Though, the environment still doesn't seem as well fleshed out as MiiVerse.
I think that consoles, in general, aren't going to be as drastically impressive until they become backbone boxes with the ability to change hardware inside them. And, it wouldn't have to be complicated or anything, just kit 1, kit 2, kit 3, etc over several years, and make it as simple as changing the N64 Expansion Pak. Then you'd still upgrade units every 3 or so years ... but it'd be way cheaper (like $150) and it'd take about 5 minutes to do. And it'd be purely optional. You just offer the current kit with whatever units you have out there ... which is what they already do, they just don't increase hardware capacity ... they do decrease it though

Anyway, being jaded and down on it is silly ... I'm not sure how you can expect revolution after revolution when this has never been Sony's foray. What they displayed is roughly on par with current mid-range PCs with moderate graphics cards ... but games aren't being made with that setup in mind, so now they will be, and that makes me happier. And we finally have a hardware level to do some of the stuff I've wanted to see for the last 15 years. So, this is good.
That shit ain't no 4K though. That's 1080p (which the current systems are NOT) And I imagine based on what's in it ... the price is going to be around $400. The hardware isn't uncommon or ultra expensive, so don't expect PS3 prices. The last thing I will say ... I'm worried about the RAM size ... 8GB unified isn't exactly an enormous amount, if it were 16GB (which would cost them about $8 more per unit) then this would truly be a beast. I guess we'll just see how well devs manage the shared space.