On top you see Tamrons 28-75mm f/2.8 lens for the Sony FE system. And today Tamron managers told this at Dpreview:
Everybody is going to mirrorless. Canon and Nikon will launch full-frame mirrorless cameras, probably in the near future. When this happens, we can easily make Canon and Nikon versions of our [native] E-mount lenses. The same design could work for [multiple mirrorless mounts].
Would be nice!