If you look at the world today, everything revolves around software; the hardware is just something to access the software.

Examples:-

Phones
Tablets
Computers
PVR
TV
Blue Ray Players/Recorders
Even some cars you can choose your dashboard layout and functions (With more on the way)
Mixers
DJ Decks
In fact pretty much everything is going that way, so I would be pretty surprised if the keyboard as we know it today will still be around by the end of the decade.
The future has been put into effect by Apple (Although contrary to what some people believe they did not invent the idea) with its iPhone/iPad principle. (You have a basic device (Keyboard in our case) and buy the Apps you want, to do what you want)

That in my opinion is the future, (And I always try to keep an eye on probable future trends) and not a dedicated keyboard for a specific task.

Bill