I am looking forward to read Everyware : The Dawning Age of Ubiquitous Computing by Adam Greenfield (released in february 2006). Judging from I've read on the author's blog/website, there seems to be compelling concepts like ubicomp as "information processing dissolving in behavior":

Some of what you'll find inside is a discussion of what we mean when we say "ubiquitous computing," including my definition of the field, at its most robust, as "information processing dissolving in behavior"; whether it's truly an immediate concern or a "hundred-year problem"; what different sorts of everyware might emerge in differing cultures; and, of course, an extended exploration of the social and ethical implications of this most insinuative of technologies.

Everyware is pitched to the smart generalist

I think the ubicomp field is still emerging and this book might be one of the first to be generalist and that will tackle this topic with the user focus. I hope it will address issues like people mental model about things (not only computers but artifacts) + the notion of affordance in context, the difference between mental model about things and computer, technical uncertainties and how people cope with them (which is an incredible issue in our research about location-based services), emergent usage of ubicomp technologies and so forth.