diberry - 10:42 pm on Jul 23, 2013 (gmt 0)
On the May 9 update, which is theorized to be an early test before unleashing Penguin 2.0 on the world, I saw a noticeable little recovery. The next month around the same time, it happened again. And yes, I could tell you in each cases some of the keyphrases that were involved in each jump.
Since then it's been more gradual, but every couple of weeks, I set a new post-Penguin-1.0 record for Google traffic.
I do think this is a (very modest) Penguin recovery, and it seems to be incremental. My theory is that it's a sort of test, that maybe some of us were in a "gray area" with Penguin and they're releasing us from it incrementally in order to test more specifically whether we are in fact doing whatever spammy behavior Penguin 1 thought we were doing.