As far as I know the X2's available on the market are all pre-releases (only sizes 8/10/12). They all come with the Aero Carbon bar.
I only saw the new bar at the worldcup at Lake Neusiedl, since the Naish teamriders were using it. I don't think Loona belongs to the Naish team.
You should order an X2 from Loona and see, if it is the X2 bar!
If not, let us know so we will never order from Loona, because then it is prooved BS.
And this is what an online shop should never do: BS an online customer
So please let us know...
The 12.0 is pretty powerfull. You can fly it at lower winds as the 11.5 and fly it in stronger winds.
But still the 8-12-16 setup is the best to cover all winds. I saw the 16.0 and it is very fast and powerful.
Available approx. mid of June