The SERPs I see now, and have been seeing for 2-3 days, are desperately old.
Can you define desperately old? I changed every URL on a site 4 months ago and added ~3000 new pages and traffic is steady, which IMO would definitely not be the case if 'old' is standard across the board, because they didn't exist very long ago, so if the SERPs are truly 'old' everywhere they should not get traffic should they?
It's actually a really interesting question to me, because if the SERPs are truly old, then how are any changes made since then getting traffic at all?
Seriously, it always shocks me when people post about how 'old' the SERPs are when I changed absolutely every URL on a site 4 months ago, and added new ones, because the traffic has been steady to increasing through this whole change over, so what people are reporting does not really make sense to me...