Well I've suggested this concept for the next PSP but looks like Polymer Vision is coming up with this e-reader soon; I found out this company Polymer Vision is pretty big on this rollable displays and they should be growing rapidly; too bad they are privately owned still and we can't buy their stock. No price or availability info yet but this is a 2007 product. Color screens should follow in couple years. This is the next screen trend in portable electronics. Watch out
Update: Here's a closeup of the screen itself;
