Not harp related really but have you guys seen this?! It looks awesome!
http://www.engadget.com/2013/05/31/the-wheelharp-string-orchestra-mechanical-keyboard/
A mechanical keyboard that delivers the sound of a string orchestra. Sorta based off of a hurdy gurdy It sounds beautiful.
I think this video is better though… https://www.youtube.com/watch?v=MGOqIYo9cBE
Check out the videos from NAMM 13, there are some that show more about how it works and demonstrating it.
Enjoy!