The latest theory based on the now later release of Vista, it seems reasonable. Do we want 2 versions and will we pay for 2 versions.
The chances of MS giving us a free downloadable upgrade to me is slim and none.
One-A new FSX in 32 bit that won't have all the bells and whistles.
Two-A second version in 64 bit that will carry the promise of new and exciting graphics that can be used by a 64 bit OS.
https://flyawaysimulation.com/news/1665/

Chief Captain