Lets just hope LAX sells enough sales in the FS9 version that Umberto will recreate MIA in FS9 if an FSX version is made...
I'm sorry, but the next new scenery will be FSX only. FS9 users, however, will still get upgrades (like Zurich, O'Hare and likely JFK next) of existing sceneries.
We said it many times already, and it's confirmed: there's no way we can support 3 different platforms once MS Flight will be out.
And besides, what we are doing with KLAX is so advanced (KDFW will look "dated"...), that we can't progress anymore if we were still bound by FS9. Porting KLAX to FS9 will not be trivial which means, for the first time, we might not be able to release the FS9 version at the same time. And, it will look drastically inferior to FSX anyway.
It's time to move on, guys...
About MIA, we never be worried about other developers doing it, and I was quite sure they wouldn't be able to pull it out because, one thing is showing some 3d renderings, but it's way more difficult turning them in a sellable product that works well and into a commercial operation make strides into the market.
The issue is, after KLAX, we'll have our hands full with GSX, all the old products updates and then supporting MS Flight, which will keep us busy for a while even without starting entirely new airports.