Since the end of September 1988, the Macintosh has been shipping with system
software 6.0.2 labelled as version 6.0.1. These incorrectly labelled floppy
disks are accompanied by an errata sheet to alert users of the discrepancy.
Apple apologizes for the confusion, but a label change at this late date would
have caused an excessive delay in shipping out the latest system software.
In summary, system software 6.0.1 was not and is not being shipped to
customers, regardless of what appears on any labels.