Leica 100-400mm vs the new Olympus 150-400mm size comparison

Dpreview published the following image to whow the big size difference between the currently available Panasonic-Leica 100-400mm f/4.0-6.3 lens and the new Olympus 150-400mm f/4.5 lens:

It’s expected that a constant aperture lens is much bigger than the Leica. Moreover the Olympus has a handy built-in 1.2x converter. I hope they don’t go crazy with the price…I expect something around $2,500…?