Great news! PYNQ is now supported on the Xilinx Kria SOM
PYNQ Now Available for the Kria KV260 Vision AI Starter Kit
https://github.com/Xilinx/Kria-PYNQ
Is PYNQ also support Kria KR260 SOM?
I'd ask that one on the PYNQ forum. The developers are there and they know all supported platforms.