Major differences between v3.5 and V3.6 hardware versions

What is the main difference between v3.5 and V3.6 hardware versions? Is it just a replacement of MOSFET? Or where can I get the hardware schematic diagram of V3.6 version? GitHub warehouse only sees v3.5

Some higher voltage capacitors, mostly. Very little difference.

Thank you. I need to use it to start doing something interesting