[Update: Google Penguin is now confirmed]

Penguin 2.0 is being discussed on social media: Looks like too big for a test, yet, it's not touching all sites yet. Marie Haynes thinks that may be an incremental rollout.

More and more people are reporting seeing big jumps in Penguin hit sites. The thing seems to be international: We hear improvement reports from Turkey and Australia.

[Update 10/20: So far the impact in the US is subtle. 90% of recoveries / hits are being reported from UK and Australia. There's the rumor that Google's John Muller says Penguin is NOT done yet]

[Update 10/21: Google now says this is the refresh which will continue for weeks]