Lensvid interviewed Sigma CEO Kazuto Yamaki. At minute 3.45 you can hear him confirm that they “have a plan to do FE lenses”.
Few more tidbits:
- They will consider making APS-C E-mount kit zoom
- They are considering making macro E-mount lenses too
As a side note watch the full video! He is funny and very honest when he takes about why he is keeping the DP Camera business. I have my highest respect for Mr. Kazuto Yamaki!