The Sony A77II screen looks interesting and well implemented.
Certainly less messy looking than the Nikon D750 tilt screen
From what I can see, the Pentax FF won't be a traditional left-hinge design, but will flip down from the top,
judging by the [awkward] finger grip space below the viewfinder, and the lack of any visible hinge:
From the presentation of the screen in the FF mockup it doesn't look identical to the 645Z tilting screen.
However it looks like the FF tilting screen will hinge from the bottom, just like the 645Z screen, and could
probably allow a similar degree of tilt as the 645Z (35 degrees downwards and 125 degrees up) :