Yongnuo confirmed they will have an E-mount lens announcement soon. No info about possible specs yet but I expect this to be an autofocus FE lens. Yongnuo currently has a bunch of autofocus lenses for Canon and Nikon on sale here on Amazon US and BHphoto.
UPDATE: The company said the lens will be exhibited between 12-15th this month on the p&e show
Some time I had received this image. Not sure this is the Yongnuo FE lens: