I hope X5 doesn't get the X3 UI!! To me the X3 UI isn't very coherent with the button layout. The X5 UI on the other hand works quite well for a scroll wheel in my opinion and I like that it's unique. I have no problem with the scroll direction. I just scroll towards what I want to select, others would disagree. If they went for a similar 'modern' UI they should do it on a device with a touch interface or include a mini joystick like some Canon SLR's. HA! That would be different.
Thanks for the update! I suspected it was too good to be true!