I am definitely seeing some kind of recovery on my Penguin site as of yesterday. I thought I'd been seeing it because a couple of sitelinks came back and some of my "no longer indexed for that phrase" pages made it back into the index for their keyphrases.
But yesterday, my traffic doubled compared to the same day last week, or more than tripled compared to the day before. It's a noticeable spike on the graph. It's only 8am, but it looks like it might double again today. I've risen a few positions on my top keyphrases, but most of the traffic is coming from long tail phrases (many of which incorporate the top keyphrases).
Also, I've got all my sitelinks back.
Anybody else? This isn't anything like a full recovery, but it's definitely a big change.