Google announced that it has pushed a new data refresh for the Panda update, which originally launched in February of last year. This is the second such refresh this month.
On June 12, Google tweeted that a refresh was rolling out, which affected less than 1% of queries in the U.S. and 1% worldwide. Now, they've tweeted again, saying:
Heads up: we're pushing a new Panda data refresh that noticeably affects only ~1% of queries worldwide. More context: http://t.co/0CCOsTzN
On a somewhat related note, one webmaster claimed to have recovered from Google's Penguin update over the weekend. A Google spokesperson tells us that there was no Penguin refresh that they're aware of. When we saw WPMU recover from Penguin, it had happened as Google rolled out a refresh.
To learn more about the difference between an algorithm update and a data refresh, see what Google's Matt Cutts has to say about it here.
Image: Pandara - The Heavy Metal Panda! (YouTube)