The new lenses appear to be focus by wire ?
Ridiculous for lenses of this quality.
Looks like they've got mechanical focus rings.
The 85/1.4 even has a mechanical aperture ring, which can be switched between going in steps (i.e. 2.0 to 2.2 to 2.5 to 2.8 and nothing in between) or adjusting smoothly.
I hope this is impetus for Sigma to start releasing its Art-series lenses in native FE mount (thus allowing Sony's AF system to be used to its full capability), so that we no longer have to rely on adapters.