Martin just announced a fader wing (control surface) for their M products, including M-PC. This is a companion to the M-Touch that we use with M-PC software. For now, here at WindWorks Design, we are sticking with our M-Touch as we continue the learning curve to move from Martin Light Jockey over to M-PC with the M-Touch control surface.
More info at: http://www.martin.com/en-us/product-details/m-play.
Here’s the original M-Touch: