Matt Cutts announced that Google Penguin 2.0 has rolled out. The SEO community are already reporting both positive and negative changes in rankings. The latest update is an algorithm change, not just a data refresh and it is thought around 2.3% of US results have been noticeably hit, but we expect to know more over coming days. We don't expect our SEO clients to see any impact, but we will be monitoring this closely. See Matts video on what we can expect from Google updates over the coming months.