According to gamespot forums their maybe a NIGHTS sequal on revolution but its just a rumor.
The Robot King
A rumor huh...they've been speculating about this like forever but once I hear an official announcement, I won't hold my breath...well actually I don't care. I never played Nights...
Bogus. Read through the entire topic and watch as we completely debunk the whole thing. The guy has no idea what the heck he's on about, quoting interviews that only say what a sequel would be like, sites that haven't been updated since 2002 (so no, there won't be anything Revolution-related on them), and even Wikipedia (which I KNOW doesn't say a sequel is being worked on). It's a fake.
*Sits in a corner, and rocks back and forth*
NiGHTS sequal will come out for the Dreamcast... NiGHTS sequal will come out for the Dreamcast... NiGHTS sequal will come out for the Dreamcast... NiGHTS sequal will come out for the Dreamcast...
Basically, SH has just torn this apart for me. There has been rumours flying about of a NiGHTS sequal for a rediculously long amount of time (In fact, I remember reading an OFFICIAL Dreamcast magazine that a NiGHTS sequal was confirmed for the DC. Look how that turned out.)
Wait until we get a big announcement, some gameplay footage/screenshots (And not the lubberly hoaxes done by out very own Spon), and then worry about it.