The Sony A7rIII is finally in Stock via Amazon itself (Click here). it is also in Stock at Focuscamera with additional free SF-G 64GB card.
And Manny Oritz tested the $5,700 Canon 200mm f/2.0 performance on the new A7rIII:
Sony A7RIII eye autofocus with Canon L series lenses – Does it work? Check out here: