I'm feverishly anticipating for e-ink displays (same stuff as your e-readers), to be plugged in as second monitors. These displays work "outside", and then _my_version_of_the_dream_office_ can become reality: working in NATURE.

This of a beautiful garden when many spots: open sun or shady, in a glasshouse or in an airconned glass covered veranda. And "office workers" just find themselves a spot!

Besides that I also thing standing desks are a must. This is the least you can do to mitigate early death by desk-job. On top of that I think that under desk treadmills are another huge step forward. And a spot where you can do a few stretching exercises (with a pull-bar) is also not a luxury in my opinion.