Most seem to agree the image is a pretty good fake, albiet not a perfect one.
Real or fake?
An image of a Canon EF 135 f/1.8L IS has shown up on the xitek forum.
For the moment, we have no idea if it’s real or a great Photoshop job. The lettering around the front of the lens looks a little off. However, discuss away!
I will note, there has been a patent for a 135 f/1.8 in the past.