Well, the Internet's abuzz today with the news that GameReactor magazine (a Brit publication, I think) has let it be known that their next issue will feature information on a sequel to the addicting Saturn game, Nights.
The cover image released by the magazine doesn't say whether it will be on Wii or the PS3 or Xbox 360, but most sites are saying it will, in fact, show up on the Wii. I'll guess we'll see soon.
Unfortunately, the original game's creator (Yuji Naka) recently went on the record saying he is not working on such a game. So, unless he was lying (doubtful) the soon-to-be-announced sequel will be developed by someone else entirely. Drat.