Captain Sim, I run the largest Flightsim Group in the world and we are 55 Members with regular attendances www.swfsg.co.uk I can tell you now that 95% of our members are STILL USING FS9.

For the aircraft (Airliners) you will find that FS9 is still the hardcore of simmers and FSX is just for VFR trips and guys that are just happy flying 'circuits'.

You need to accomodate FS9 users if you want to make money with addons as this sim has a better future and the fact that millions already have purchased so many addons for FS9 they are not about to give them us in the near future.

Moreover, the fact that another sim isn't even on the horizon, let alone been spoken about means that FS9 will live on forever. 8-)