Nokia in conjunction with Cambridge University today released details of Morph - a concept nanotechnology device. Concepts are, by their nature, somewhat speculative, but nonetheless Morph does offer an intruiging glimpse of possible future technologies. This includes the use of flexible materials allowing for bendable devices, self cleaning materials and greater use of integrated sensors.
Looks like those dreams of the Applications key (N Series) changing to the Home key (E Series) throughout the smartphone range are in vain, 10 years down the line its still being used.
If modes of use of the mobile phone doesnt change drastically, then i can see this phone being a reality. Nanotech is becoming more ubiquitous in research and small time manufacturing (passively) and as such the full realisation of this technology will be available in our lifetime (mine at least...i hope to live 20 more years at least).