Maybe the track banks to the opposite direction just before the curve a little bit and then into the curve and the camera is stabilizing it?
I watched the first launch many times now and you see the track banking ever so slightly to the left, then to the right into the curve.
edit: look on the...
For me it was on Oziris in Parc Asterix.
That little moment after the vertical loop when the track goes straight for a bit before entering the immelmann was totally unexpected airtime for me. For a brief moment i thought I was falling.
Yukon Striker has the same moment after the loop.
I saw a picture where construction workers stand in one of the tubes and there you see the support going through the big one to the other side.
Edit: Found the picture
Was there yesterday and yes, looks like the supports for the minetrain coaster. There are actually tons of dark green supports, track pieces, railings and more.
Seems like the coaster is just waiting to be build now.
Beside the gerstlauer and the new Galafati booster, every ride is open.
The Homepage isn´t up to date (really, the hp is a mess) so the prices are from what I remember.
These are the coasters I can think of:
Euro Coaster ??
Dizzy Mouse 4,50€