Reported by VGC and corroborated by Eurogamer today: the successor to the Switch, which was originally slated for launch in late 2024, will now reportedly launch in Q1 2025 (so around February-March territory) with Nintendo telling third party developers and publishers the new date. Important to note that the new reported release window is still located within the same fiscal year.
I’m also able to corroborate these reports through my sources as well.