While the FAQ for Switch/Switch 2 accessoires clearly states that the Switch 2 will not be compatible with the dock of the original Switch, there was no information the other way around.
Surely would have made sense to make the tablet compatible at least, even if the joycons don't fit in the dock as well. Many people who buy the Switch 2 will still have the old one and with the video output through USB-C being so similar, it wasn't impossible that the dock of the Switch 2 could also be used for the old Switch.
Since there was no information to be found about it, I just asked Nintendo. This is the response I got:
Translation:
Surely would have made sense to make the tablet compatible at least, even if the joycons don't fit in the dock as well. Many people who buy the Switch 2 will still have the old one and with the video output through USB-C being so similar, it wasn't impossible that the dock of the Switch 2 could also be used for the old Switch.
Since there was no information to be found about it, I just asked Nintendo. This is the response I got:
Translation:
Dear customer,
Thank you for contacting the Nintendo Contact Center Europe team.
We understand from your message that you would like to know if you can use the old Nintendo Switch in the dock of the new Switch 2.
The docking station for Switch 2 is not compatible with the Switch console.









