Google is rolling out Panda Updates

Panda refresh is rolling out—expect some flux over the next few days. Fewer than 0.7% of queries noticeably affected: goo.gl/woSU3
— A Googler (@google) September 18, 2012

Panda Updates history, http://searchengineland.com/panda-update-3-92-rolling-out-or-is-it-panda-4-0-time-133607

Google Updates Panda

Google tweets about Panda update

Panda data refresh this past Monday. ~1% of queries noticeably affected. More context: goo.gl/wQRZ0
— A Googler (@google) August 22, 2012

Google updates Panda again

@google tweets about Panda refresh,

Heads up: we're pushing a new Panda data refresh that noticeably affects only ~1% of queries worldwide. More context: goo.gl/HNvCt
— A Googler (@google) June 25, 2012

More on Panda, http://www.abeens.com/2012/04/google-panda.html