View Options… (⌘J) — the full set of grid and Loupe display preferences in one place.
Grid View Style — how much information each grid cell shows.
Loupe Info — which text overlay (if any) appears on the Loupe image.
Loupe Overlay — an optional composition grid drawn over the Loupe.
Show Focus Points — overlays the camera's autofocus points on the Loupe image: the whole sensor array faintly, with the point that was actually in focus highlighted. It scales and pans as you zoom. This needs autofocus data in the file, which most Nikon bodies record; photos without it simply show nothing.
Enable Mirror Image Mode — horizontally flips the Capture module's live preview, so a subject facing the screen sees a natural mirror. Affects the Capture preview only.
Scroll By Row — when on, the grid snaps its scroll position to whole rows rather than stopping mid-cell.
Grade Preview — while editing in Develop, shows the photo's Grading-module grade composited on the canvas, so you can judge the finished look without leaving Develop.
Coming soon
Placeholders in the View menu for now: the Duplicates view mode, and the Sort submenu.