From my understanding they will be replacing the track (new track is identical) and adding in a star field effect like DL/DLP (very cool if you haven’t experienced it). They are also redoing the pre-show load area and the exit.
They have been planning this for a while and I wouldn’t be surprised if it is all been pre-assembled. 6 to 7 months sounds about right.
incidentally when I was at the MK in Oct we road the TTA through SM late when the lights here on. There is enough room in there to put 2 more coasters (easily). Wouldn’t it be cool if they added another coaster! Also it looked really really dirty in there…
(my hope is they get ride of the chain lift…hate that CLINCK CLINCK CLINCK…ruins the experience.)