They can still build a new engine based on the GMAX models, which would make all the current aircraft compatible. Microsoft cannot ignore third party software, as it is a major reason people buy FS
, so don't expect anything so radical that current aircraft/scenery, etc wont be compatible.
But, if a rework is done, as I said GMAX would probably be still in support, and scenery too. Although what I expect to happen is that the current engine will be further enhanced and made better.
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