The perfection of voice-to-text technologies, coupled with the inevitable acceptance of simplified English (like u, ur, etc.) and anticipatory word selection (from a limited corporate-approved dictionary) may eliminate even the two-finger technique and change what acceptable written text looks and "sounds" like. Further, topic based writing requirements using data defining techniques (XML)to satisfy the need to write once and display everywhere (phone, terminal, help screens, web) will create completely uniform output eliminating the "voice" of the writer. Eventually meta-writing techniques, which enable systems to become self documenting, will emerge.
Here's what it may look like :-) Press zee red boottun tu stert zee system. Veeet fur system ineetielizeshun und zeen oopee zee inpoot cufer. http://www.tuco.de/home/jschef.htm