1.0 Original release. PCI0 bug (missing capacitors on tx lines), mPCIe slot 3.3V lines limited to 1447mA (4.7kΩ resistors on current limiter)
1.1 First revision. PCI0 tx line bug fixed. mPCIe slots still limited to 1440mA (still 4.7kΩ resistors - this is my board)
1.1 Reports of v1.1 boards with 3.0kΩ current limiting resistors on mPCIe slot 3.3V line (@Reiver’s board), mPCIe 3.3v line 2267mA.
1.2 changes on pcie line like later v1.1 (which maybe incorrectly labeled)
Source: https://forum.banana-pi.org/t/bpi-r64-possible-hardware-improvements/12711/12