[Klaus]

So it is real - an extending zoom lens:
https://www.canon.com.au/camera-lenses/r...3-9-is-usm

Not sure what to make of its MTFs. Not too hot but this MAY relate to the slow aperture.

https://cweb.canon.jp/eos/rf/lineup/rf20.../spec.html

[Kodachrome 25]

Look, what Canon did there: You buy the ET-101 lens hood for only 1899 and the lens is included!

[Klaus]

Seems to be a reasonable value to me this time.

The big question mark may be image quality - 3x UD elements aren't a hell of a lot for such a long lens. However, I give Canon the benefit of the doubt here.

[Rover]

Happy to be proven wrong on both counts. It's time Canon got off their usual high horse, if just for a while.

[joachim]

If so, they did a good job hiding the focus ring...

As I understand there is now a multifunctional ring, but no real focus ring.  I don’t yet understand what that means, though they may be on a journey to drop the focus ring.   

I rarely use these on my lenses.  S-AF most of the time and C-AF in special situations. Very rarest do I move to MF.