Kazuto Yamaki President of Sigma gave lenstip an interview, which I covered on 43Addict and he had some interesting things to say about X-mount and in the broader interview lens design for mirrorless:
Other
- Full Frame Mirrorless is their priority and then APS-C followed by DSLR going forward
- Sigma wants to develop for Fujifilm X Mount, but their resources are limited and it is not their priority now
- Kazuto Yamaki wishes they could make a lens for X Mount right now, but they have too much to do with their limited resources
Doesn’t sound like we will see any lenses anytime soon, but maybe they will have some resources freed up in the future or Fujifilm will become irresistible.
You can read the full interview here or read the excerpts here on 43Addict.