^ Do you really expect corporations to code their software to work with Linux, representing a whopping under 2% of computer users? 
Anyways, if sigma would have had this accessory years ago it would have saved their brand an awful lot of hurt over bad AF!
Well, yes. They could easily have used a cross platform library for writing the application and then it would have worked everywhere. I am tired of companies offering software for Windows and Mac OS alone. It smacks of laziness.
Well no, says somebody who actually has written cross system software, it's quite difficult and expensive. Have you ever done this, or are you simply giving us your unfounded opinion? That smacks of laziness.
Yes I have done this... I write software for a living. Making the decision to be cross platform would have been easy, writing the software not so much. But if you are going to invest in Widows and Mac versions of the application, you may as well go that extra step and support Linux. Imagine the goodwill that would engender. Instead of 'Oh well, another company not willing to support Linux', it would be 'Wow, check out Sigma and the awesome Linux app'.
Without actually seeing the software in action, it's hard to tell how complicated it is, but I imagine a library/framework like QT would have been an option for a piece of software like this.
That being said, once the software and hardware is released I imagine it won't take long until the protocol is reverse engineered

Anyway, I can't wait for this to be released. I love a new gadget and this one looks like it could be fun. I have already been playing with the MFA of my copy of the 35mm f/1.4 through my Mark3 and would love to see how that compares with changing the settings using the USB dock.