I’d like to report something I found out few days ago, after receiving a Rev1.2 sample.
40-pin connector has been rotated by 180 degrees between Rev1.1 and Rev1.2.
so pay attention before connecting any HAT designed for Rev1.2 or Raspberry Pi if you have a Rev1.1, it must be turned 180 degrees as well, otherwise some damage can happen.
@jack maybe it’s good idea to mention it on official wiki, together with the pin differences