Firstly, hats off to Patrick of Fujirumors for staying on the ball re: the X-T10. The above image, which leaked at Fujirumors several hours ago, shows key ergonomic/haptic differences to the X-T1. Most of them are positive:

1. a small pressure grip replaces the half-assed miniature finger grip, which should make the X-T10 more comfortable for medium to large hands.
2. The weak interface door on the right appears to be replaced with a plastic slide-in flap (evidenced by the fingernail pressure indentation). If properly implemented, ala the D800 card door, it should be more sturdy and less prone to flex.
3. The unlabelled body-side aperture dial on the front of the camera is now located several millimetres farther from the shutter release and is no longer incorporated into the grip. This could make it less prone to accidental engagement.
4. The AF lamp now lines up with the body-side aperture dial and the X-T10 logo. Small details like this make the X-T10 appear less randomly thrown together than the X-T1.
5. PASM and shutter speed dials sit on top drive/meter dials with narrower bases and larger indexing sliders. They should be less easy to accidentally engage or disengage, which is one of the X-T1's worst design blunders, and one about which I went on and on in my review of the X-T1 after taking it hiking.
6. The threaded shutter button returns. NOTE: the shutter release also sits higher in its mount than does the X-T1's. Here's to hoping that it can be twisted without turning the camera on (which is a poor design blunder that plagues the X-Pro 1).
7. The exposure compensation dial sits in a recessed niche, also hearkening back to the X-Pro 1.
8. The lines of the faux prism housing line up with the top of the case, which not only more closely resembles that of the Fujica ST901, but also looks cleaner.
9. The hard-to-reach front-facing function button has been removed.

Patrick swears that this is the to-be-released X-T10. Assuming this picture is 100% accurate, it is fair to say that the angular X-T10, while not slavishly retro, is more classically designed. It also employs a cleaner interface based around utility rather than features proliferation. That it doesn't appear to be a simple dumbed-down X-T1 means that Fujifilm have taken criticism of the X-T1 to heart.