The notebook/tablet can't do anything as of now, it's just meant for developers to see what they can do with it. An e-ink notebook/tablet sounds awesome though, it's just what I need, at least. A computer that can run for whole days of use, as you should know, e-ink readers make batteries last incredibly long - so you can travel or go around with it for intense note-taking or reading, for example.
I presume it's good to earn money for doing what you love, but I also think that people do it because they believe in the project. I know I would do the things I love earning money or not. Of course I would have to find something else to make my living.
There are examples too in history of people that did things out of their career that made a difference, probably because they loved doing it.