Xbox's Secret Sequel: A Decade in the Making.

Microsoft is reportedly working on a mystery franchise sequel that may take up to a decade to develop, according to an amended complaint in a lawsuit against Microsoft's proposed deal to acquire Activision Blizzard. The document references an unannounced Microsoft game in an established franchise, which could potentially be Elder Scrolls VI or something entirely unannounced. The sensitive details are redacted when the documents are released to the public, so it's possible we won't know what this project is for quite some time.