Lowlands & Saxony declared recent news:
Hauptstaff Armory, known for the SC-32 Rifle, and various weapon systems, such as the PAAAP artillery and Anti Air platform, and the latest Invictor IFV, will be cooperating with Saxonian aeronautics company Fokker to research and develop a supersonic UAV. It will be the spiritual successor of the SR-71, and will share many of its specifications in terms of speed and altitude ceiling.
The SR-72 is a turbine-based combined cycle propulsion, powered by the turbine engine and the dual-mode ramjet, with the capability of reaching hypersonic speeds from a static position. Lockheed Martin speculates that these types of models could be in use by 2030.
For more information about the specifications and build information, click here.