As posted in the Nexus News on the SWAT mainpage, There are still people working for a sequel to Nexus: The Jupiter Incident. There is an online petition for this project at: http://www.petitiononline.com/nexus_2/petition.html
Many of the people who worked on the game originally are now employed by Most Wanted Entertainment, but the Hungarian courts currently have control of the Black Sun game engine Nexus was built on. Check the Nexus downloads section for the tech demo movie produced to show some of the features of the sequel's game engine & features.