The Mock-up for the Turkish tactical utility helicopter program shows an extra row of windows where the refuelling receptacle is normally located, that may indicate a relocation of the fuel tanks to gain that extra space back, however that feature is not present in the configuration prototype.
A close look at the pictures in the first flight brochure shows a nice flowing curve along the "chine" below the window line, no more ugly boxlike structure and a complete yet subtle redesign of the fuselage that increases lateral space.
Also the window behind the pilots is larger, that space being stretched due to the requirements of protective armament installation for military use.
Larger (taller) sponsons to accomodate larger diameter MLG wheels are evident as well but not the new lightweight stabilizer, located on the port side only and further back than the current design.
I wonder how much it's going to be able to sling in real life.
I'd expect a few changes to the second ship and production airframes.
Nice, very nice altogether. I want one.