The point about Rage though is that it's got fully unique texturing. That's really going to take some beating, and definitely represents the Next Big Thing in 3D graphics. Notice also that it doesn't overdo either HDR nor bumpmapping. Those previous shots are definitely pretty, but they're nothing that can't be done with current (or even previous) gen technology but with the HDR and bumpmapping dialled up to the max. Nothing too special in other words. Grind out the code, refine the algorithm, increase the precision, add more polys, cater to the mindless masses who just want to see the bumps and want to see the bright colours, Bob's yer uncle. Where's the technical innovation in there?
Hopefully we're getting near a stage where both HDR and bumpmapping start getting the same treatment as coloured light did a decade or so ago, and game developers realise that they're been overdoing both and that maybe more subtle tones and effects are really best.