Filter size is 82mm for that Noct Z. Nikon said it would be manual focus only. The VR is provided by the camera by default (5 dimensions).
I wonder why the new Noct is so big? AF lenses are often bulky due to the AF motor, but this lens is manual focus.
The entrance pupil of a 58mm f/0.95 lens is 61mm - the same as an 85/1.4 lens. Often the front element is a bit larger so mechanical vignetting is less but from the pictures, the front element is not overly large. It seems possible the lens could be more slender with a 72mm filter size instead??
I had a closer look at the picture attached earlier in this thread, two other interesting things to note:
1. The focus throw is
extremely long, you can see the close focus 0.5m mark just to the left of the infinity mark, which means the focus throw is nearly a full rotation, I guess 330°. Michael will be pleased. By comparison, the AI 55/1.2 and 58/1.8 Noct focus to the same distance with "only" 230° rotation (which already makes them slow to focus...). The Z Noct also has a much fatter barrel so the focus travel is proportionally greater in addition to the longer focus angle.
2. There seems to be a small LCD panel in the side of the lens, maybe is like the Zeiss Batis lenses for showing DOF?