Sierrasim Simulation has today came to their Facebook page to share a total of seven screenshots of their Antonio Narino Airport (SKPS). Based on the post, the scenery is almost ready to be released.
It is clear, that there will be a special discount for existing users of the Prepar3D and FSX versions of the scenery, however, the exact amount is unknown. The first time the scenery development got mentioned was about five days ago.
Sierrasim Simulation is currently working on transferring all their sceneries to the new platform. When should they be released is unknown. Discounts for existing users of Prepar3D and FSX variants of the sceneries will be available for all Sierrasim products for the new Microsoft Flight Simulator.