The Sonys support free-hand annotation (aka drawing) as well, at least the 350/650/950 does, I don't know if they kept this feature in the T1 or not. But they are saved as drawings, there's no handwriting recognition like Palm's graffiti (which, personally I never got the hang of and always hated!).
As for the future: I am one who believes that dedicated readers will eventually go away. I imagine a tablet with a backlight that can be turned on or off depending on your lighting conditions. It will be color, but b&w text will look as good as e-ink. With the backlight off and used for reading books (as opposed to watching video), it will get as good battery life as e-ink.
In the shorter term, it would be cool to see e-ink with better resolution and darker text/whiter background. If the refresh rates were better, I could also see plugging a keyboard into it and using it as a little word processor. So, an e-ink reader and writer.
eP
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