Genki
Never heard of accessory manufacturer Genki, but now everyone does, because they just revealed the Switch 2 before Nintendo did.
The above video is also available on Genkis Website.
They obviously show their accessories mainly, but you can basically see the whole console and how the Joy-Cons detach and attach magnetically.
Additionally, you can see the optical sensor in action. Moreover, the blue and orange colors below the Joysticks and the rails of the Joy-Cons.
It’s happening, and I believe we can expect a reveal this or next week!
The release should be close, too. As I suggested end of March or April, is still my guess.