There’s one change that might affect sites and pull things back.
Operative word here is "might". They aren't promising that you'll be pulled back. They are assuming some sites will, but who knows what those sites are and why they are chosen? Would be interesting to analyze this new set when it happens.... Without improvements on a site you think that deserves fixing, then even Panda 2.2 may not make a difference.
I'm not holding my breath.
On another note, I've been sending a slew of spam complaints/reports to Google for keywords I find in my niche almost daily, complaining about scraping I find against my site and other sites I follow. I am hoping that some of these reports are actually making their way to actual eyeballs in the Google Spam team. I would encourage everyone to keep sending out spam reports where they see fit.