I upgraded from my original X100 to a black X100s and I am more than happy, I have since added the superb TCL-X100 to the kit which delivers brilliant images and so I will not be changing to the X100T as the improvements/additions do not justify the move.
If Fuji deliver an X100F (for full frame) then I would be seriously tempted but alas, this is not to be ................yet!