So, apparently, RCS are building the higher sections of the top hat on flat ground. I guess it will save them a lot of time and money, having everything assembled before the big crane lifts the pieces.
As for the downwards 270º roll, I am inclined to think that it won't be one of the coaster's elements. In fact, if you like at those sections, there aren't any special supports "sticking" out of the tower just like on TTD or KK.
Anyway, onto the pictures:
Source: PA-Community.com