I believe that if we had glasses that could interface with any desktop, laptop, umpc, tablet, phone via say Bluetooth 3, or some future technology that is much faster, and act as a large display, it would further blur the lines of a development platform. They would need to be:

1. Fast update with no latency
2. High resolution (minimum of 800x480)
3. Allow audio to replace the current phone headsets with stereo audio (the new wave of cell phone communications), listen to music, computer feedback, etc.
4. Light weight so that it can be worn like normal eye wear
5. Be implantable in prescription glasses
6. Interface with most anything (Cell phones, laptops, tv's, dvd players, your automobile for enhanced vision/gps/backup view/etc)
7. Not obtrusive (perhaps, turn completely see through when not in use, this would be just like the bluetooth headsets that people walk around with, sticking out of their ear, when not in use)

Currently, I only do a MINIMUM amount of coding directly on my N810 as the screen real estate is too much of an impact and slows down my own progress to about 5%. Never mind the keyboard input, speed of the device, limitations of RAM, etc. My laptop is my 100% development platform as it needs to go where I go and the tablet is as stated earlier.

WHY DOESN"T THIS EXIST YET!!! I've seen glasses that exist similar to this but their adoption rate, resolution, cost are all pretty bad right now.