The 0x01000000 in the SLB2 firmware container files is the SLB2 version, not the firmware version.
The prior firmware which was "leaked" is not the same as they released now. The current firmware has the version 01.501.000. The prior one had 2 different XML's files, so it's still unclear if it was 01.000.000, as the US update list said or 01.500.000, as the JP update list said.