This is again in the realm of speculation but with the advent of 3D TV (making its appearance in testing labs for possible manufacturing "pre prod" phases this summer and maybe for consumers next year) what chance do you think of Windows 7 supporting 3D Monitors or is that for a future Windows release.
Maybe some Holographic hardware would appear too.
Now this WOULD require HUGE increases in RAM and CPU processing power -- at LEAST a top end quad - maybe 8 cores and a massive performance increase in Video graphics (GPU etc).
Most "Games" still look to me as not lifelike at all so I would imagine the whole video sub systems would have to be redesigned from scratch.
(I'm talking here about Genuine 3D where you don't have to wear those funny plastic blue / red glasses).
I've seen some trade demos of 3D TV -- once you've seen some of this you really just want to throw away your existing equipment.
Believe me this is AWESOME (and I'm not really a huge watcher of TV). This stuff is finally ready for Prime Time.