skiboot 6.6.3 was released on Thursday Sep 10, 2020. It replaces skiboot-6.6.3 as the current stable release in the 6.6.x series.
It is recommended that 6.6.3 be used instead of 6.6.2 version due to the bug fixes it contains.
Bug fixes included in this release are:
fsp/dump: Handle non-MPIPL scenario
hw/phb4: Verify AER support before initialising AER regs
hw/phb4: Actually enable error reporting
hdata: Add new “smp-cable-connector” VPD keyword