Will industry pros in the future refer to the PS2 as both a 6 & 7 gen sys?

[WiiStation360]

I see generations as referring to hardware, not to date ranges. The PS2 had a longer life, but that does not make it part of the latest generation.

If you go just by dates, the 7th generation started when the XBox 360 launched. Since then, the best selling console has been the PS2 with 27M+ consoles sold. It is quite possible that the PS2 will outsell the XBox 360 over the 360's lifetime.