Switch 2 officially announced, switch 2 direct 2nd of April

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According to Necrolipe, who is usually reliable, Switch 2's Joycons will include improved motion sensing capabilities over Switch 1:

https://www.gonintendo.com/contents/45259-rumor-switch-2-to-use-9-axis-motion-sensor-versus-6-axis-on-switch

HD rumble will also be returning:

https://www.gonintendo.com/contents/45260-rumor-patent-shows-return-of-hd-rumble-nfc-and-more-on-switch-2