I agree with Tom (see my other post)
Though it is regarded as a "game", I cannot see M$ dropping Flight Simulator, based on it's history, and the time that it has been out. Plus simmer are more or less used to a new release every few years, and M$ would know that the simmers would expect it.
Added to the fact that X-Plane is the only alternative, and weighing up the graphics, and ease of play in FS, I think we are all safe for the future.
Cheers
Andrew.
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Kindest regards,
AJ
"If you know the enemy and know yourself, your victory will not stand in doubt; if you know Heaven and know Earth, you may make your victory complete." - The Art of War - Sun Tzu