This is pretty much assured. Last generation saw the introduction of HD as a standard format, new generation of shaders, multi-core graphics units, tesselation, new real-time lighting tech and the implementation of big textures, allowing higher res on big areas, even outdoors.
We won't have many of these "mini revolutions" in the 8th gen, so the leap will not be anywhere near as vast as that of the last generation.
The difference between the PS2/X-box/GC and the PS360 is staggering on second generation titles and up, there's just no end to the improvements on current consoles over previous ones.
The PC will keep pushing the boundaries for sheer tech while consoles will force developers to optimize, shrink, funnel, compact and generally accomodate great visuals on lesser tech. New threading technology for a new generaion of CPU's will also mean big improvements in AI, which is something we are in dire need of today, especially on consoles.







