ACES, the Flightsim studio of Microsoft has been closed down. Of the approximatly 100 people only 6 are left to shut things down. So no bright future for Microsoft Fight Simulator.
It also affects Microsoft ESP, a simulation application based on the FlightSim platform. ESP was developed by the same team so it seems this product ends as well. There are no official statements yet. Perhaps on the ESP Insider blog or Developer blog of the ESP team something will get published?
We looked into ESP and wanted to investigate the possibilities to use it as an advanced 3D GIS platform, with data from Virtual Earth, AI, 3D visualisation and modelling, etc. On the other hand if cannot use ESP, we can explore OpenSceneGraph again. We used OSG a couple of years ago with success and I suppose it moved forward so it even better fits our needs.