Well he leaked the side of the Switch 2 and the Dock, now it looks like the Next Handheld leaker is also leaking part of the actual Switch 2 Joycon. Looks like it might be two toned (the magnetic part)?
There's the new mystery C-button on the right Joycon.
Here's the new Switch 2 dock and side of the system with new kick stand as has been leaked since Christmas (images edited with the AI background the person used to hide their location taken out).