yeah. I'm sure the 600s touch screen will be flush with the screen which will improve visibility by as much as 100%.
the problem is that the touch screen dims a screen by 80%, but that's with backlight devices. with eink, the light must pass through twice,
so that leaves 80% light hitting the screen, than another 20% gets shaved off. that's 80%-16=64%
but I for one am expecting them to update the 700s firmware with that of the 600s, possibly sans scribble, but its possible they do add it. but I think there will be a big chance we will see our dictionary.