OK, so my throttle cable snapped on my way to Laughlin, and I had to cancel my trip thanks to the typical 7 day lead time to get any Triumph parts here on the West Coast

Anyway, at least that gave me time to install the redesigned RamAir, replace a leaking cam cover gasket and check the valves.
As others have reported, the filter kit is very well thought out, and the installation was a breeze with the detailed instructions. However, I think they still didn't quite nail the rubber collar redesign. The groove that matches to the lip in the throttle body has been cut much lower (distance 'a' in the first photo below) than in the stock plenum. This requires you to push the filter farther down the throttle bodies before the lip engages. That's fine and should result in a better fit, but it's almost as if RamAir was not aware of the secondary throttle plate axle casting which is in the way (see the 2nd photo below).
The filter does lock down to the throttle body lip very positively when pushed down. However, on my first two attempts at tightening the clamps (very gently), I noticed the clamp pressure forced the lip out of the groove either on the upper or lower side of the throttle body. I think you could cut small notches in the area highlighted in red in the 2nd photo and have a great fit, but I didn't want to cut up my brand new filter at least quite yet. Instead, I pushed the filter firmly against the throttle body while tightening the clamp, and that seemed to do the trick.
Overall I'm very happy with the filter and I think it fits fine now, but I can see a possibility for installation problems even with the new design. Once done tightening the clamps, make sure the rubber collars still sit perfectly perpendicular to the throttle bodies!