I don't currently have a Switch and I was thinking of holding off if they were releasing a new (properly upgraded one). If they're launching this OLED one then I may as well just get it (assuming the next proper upgrade is not coming for at least a year or two).
Plus, back when I did have a Switch (all the way back in 2017), the reason I rarely used handheld mode was because of the shit screen. Sure the resolution hasn't improved but with a bigger screen and it being OLED... it might look a bit nicer? I would have loved to enjoy handheld mode/tabletop made but I just couldn't at the time. Of course I'll wait for pre-release hands on previews etc before making a judgement (and preferably trying one out in-store if that's a thing again).
Obviously if you have a Switch already (especially the non-Lite variant),you most likely do not want/need this.