All Penguin Releases Dates
Penguin 1.0
April 24, 2012 (impacting ~3.1% of queries)
Penguin 1.1
May 26, 2012 (impacting less than 0.1%)
Penguin 1.2
October 5, 2012 (impacting ~0.3% of queries)
Penguin 2.0
May 22, 2013 (impacting 2.3% of queries)
Penguin 2.1
Oct. 4, 2013 (impacting around 1% of queries)
Penguin 3.0
October 17, 2014 (impacting around 1% of queries)
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