They still exist, releases for Microsoft Flight Simulator X, which was already released at the end of 2006. Two days ago the scenery Lukla Mount Everest Extreme by Aerosoft has been released for FSX. Originally it was released half a year ago for Aerofly FS 2. From October 2019 on the new edition of the Airport on the Roof of the World was finally released also for Prepar3D v4.
Regarding the product description the now released FSX version does not differ much from the previous versions of the scenery. In total there are five detailed implemented airports and seven more generic airports. The scenery covers an area of 200 x 200 kilometers and promises over 366,000 buildings and 40 million trees. There are also numerous helipads, many of them at very high altitudes. Aerosoft Lukla Mount Everest Extreme for FSX is also compatible for FSX:SE and is available for 25€ here at Aerosoft.
