I hear after this holiday season Nintendo’s not going to restock the NES & SNES Classic Edition plug-and-play systems discontinuing them. (For now.) Probably in-favor of the Switch online classic games service.
Don’t get your hopes up for an N64 or Gameboy Classic, as Reggie stated they have no plans for those, and Nintendo only made the NES/SNES ones to bridge the gap between the WiiU & Switch releases, and never expected them to be so popular, and apparently doesn’t care about making more Classic systems for now.
I guess they don’t wanna overdo them either, as I remember some critics mocked them, assuming they were going to redo every system. (Though, a GameCube Classic might’ve been cool considering GCN games have yet to ever be released outside a few remakes.)
Meanwhile, the Playstation 1 Classic is apparently not doing as good, due to it’s high price tag, controversial game line-up, and bad critical reception.