Google has released an update to the Google Penguin algorithm , the Penguin version 2.1. Matt Cutts himself who announced via Twitter, the following is Matt's tweet:
Penguin 2.1 launching today. Affects ~1% of searches to a noticeable degree. More info on Penguin: http://t.co/4YSh4sfZQj â Matt Cutts (@mattcutts) October 4, 2013
I do not see a significant effect with the 2.1 release of Google Penguin in all of my website/blog.