UPDATE: Since this article was originally posted, Middle-earth: Shadow of War has been officially announced and will launch on PS4, Xbox One (+ Project Scorpio), Steam, and Windows 10 on August 22nd in North America and August 25th in Europe.
Middle-earth: Shadow of Mordor appears to be getting a sequel, after a retailer accidentally leaked the news online.
Target listed the title Middle-earth: Shadow of War with a supposed release date of August 22nd, but has since been removed.
Monolith Productions once again look to be developing the game, and while details are currently scarce a Kotaku report suggests a continuation of the journeys of Talion and Celebrimbor.
Middle-earth: Shadow of War is yet to be a confirmed title.