i don't think the current addons will work with the new upcoming flight simulator.

also i think just like what happend with FSX that it will be only working better on really high end pc's if you want to enjoy more of everything combined with the graphics.

FSX was a big hog on the systems when it was released and still with descent hardware you still can have huge FPS issues.  

I think i will pass on the new flightsystem, since i bought quite some scenery addons in the past few months and dont have the unlimited fund to upgrade them constantly :)