With the arrival of the upcoming I-phone by Apple we will begin to see a new direction for user interfaces. The first user interface was the command line, and the second was the use of overlapping windows like today’s XP and Mac interfaces. Now we have a totally new interface that will revolve around using touch sensitive screens to manipulate data. Check out this video: Click Here.
It is amazing what the human mind can develop, and what will be even more amazing is the applications that will be developed with this new technology.