The launch of Switch 2 will be more significant of Christmas 2025. Nintendo can launch the console any day of the current fiscal year and it will sell out.Fiscal year goes through March 2025 iirc. Means it may still come out in 2025 (likely I'm guessing, unless there's a holiday surprise.. I dont know why they wouldn't do holidays though, would be ideal. But Switch also came out in spring 2017
I look forward to getting my hands on one. If Zelda Tears of the Kingdom with object persistence, vast lands that traverses underground, land and sky + insane physical, can run on the switch, I expect epic performance jumps for the successor if it uses ai upscaling.