Yes, I had thought about the Canon lens - a flexible solution, probably better optically than some alternatives, most likely to work well with adapters as a native Canon lens, but quite expensive.
I am looking forward to the A6000 replacement with interest, but as it stands that might still leave us with limited options for good fisheye solutions - thus our current manual focus workaround with the Tokina 10-17. If a new APS-C camera's autofocus with adapters works as well as it seems to do for the A7RII then that would be interesting. Deo claims that the Saker Falcon Lite autofocus works well with the A6000's hybrid PD/CD system at least for native Canon lenses but I haven't found many relevant independent reports and none that relate to the Tokina lens, so going that route at present would be high risk.
At least there is now a good native macro solution for Sony E-mount owners in the 90mm FE Macro.
I probably won't be at the show in February but I'm speaking at the February BSOUP meeting.