ReSpeaker Mic Array v2.0 Open Source HW?

Hi, the ReSpeaker Mic Array v2.0 product has the Open Source Hardware logo on the PCB and the packaging box. But I am unable to find the circuit schematics in the seeed website.

Can you please help provide the schematic files for the device?

Thanks

It seems to me that there is no open source hardware logo on it, and it is normal if there is no schematic. @gohan