> Interestingly, according to the chart here
> <https://en.wikipedia.org/wiki/Oracle_Solaris>, there was never a
> �Solaris 6�. There is not even a �SunOS 6�.

If I recall correctly, the 2.x series where generally referred to by the point number - hence 2.6 was referred to as "6" 

Cheers,
Warren.