The s24 ultra is rumored to not have the 10x camera that the S23 ultra has.

The s24 ultra is rumored to have a .6x, 1x, 3x, 5x.

The s23 ultra has a .6x, 1x, 3x, 10x. The 10x is about 230mm zoom, which I really like.

Also, the s23 ultra’s screen curves down at the edges, so it looks like there are no bezels. The s24 is rumored to have a flat screen.

IMO, the rumors for the s24 ultra indicate a device that takes a few steps backward relative to the s23 ultra.