Last year after the crew that made Microsoft Flight Sim X finished the expansion they got shut down. It sucked too because the games they made over the years were stellar (if you like sims like I do at least)
So then for some odd reason Microsoft decided to make a new studio and reboot the series. I pray it will be as good, although I know that they are putting more dumbing down options to get other people on board, so long as they keep it possible to work as a full sim.
Thoughts
http://www.microsoft.com/games/flight/*update* This source may be quite unreliable (wiki) but says free to download Feburary 29!