To those saying that it's not a retro system because you can still find games for it at retailers, I must ask: What does large print runs have to do with it being classic or not?
I would've understood anyone saying that it's not a classic system because there are still games being officially released for it, though. FIFA 14 was just released for the PS2. It's actually called "FIFA 14 Legacy Edition" - no joke. And as I mentioned in my first reply to this thread, PES 2014 will come out soon and be the last game for the system.
Personally, I think it should be considered a classic system when both the final game for it, and the PS4 and XO, are released.
And wired controllers as the standard.
And no HDMI connection.
And no system online store for buying digital release games.