[Rover]

I would've thought this one intriguing, had I not forsworn the RF system. :-) That, and the price, of course. I would expect Nikon to do something along these lines, too.

But both the IS and the fact that this lens is using an STM motor are unexpected.

P.S. The bulbous front element is pretty much a given at this focal length. Even so, the native distortion and vignetting are not going to be pretty.